NF T 47-501 O-Ring Size Chart

NF T 47-501 French metric O-Ring size chart with ID, CS, and OD in millimeters and inches.

History of NF T 47-501 Master O-Ring Size Chart Metric / ISO Chart

NF T 47-501 is the French (AFNOR) metric O-Ring size practice closely related to ISO 3601 metric use. Sizes appear as millimeter ID × CS; store codes use CS×ID.

OD = ID + 2×CS. Code links open a product search on theoringstore.com.

447 sizes · NF T 47-501

1.8 mm cross-section

CS 1.8 mm · 73 sizes

NF T 47-501 1.8 mm cross-section size table
Code (CS×ID)	ID (mm)	CS (mm)	OD (mm)	ID (in)	CS (in)	OD (in)
1.80X001.8	1.80 ±0.15	1.80 ±0.08	5.40	0.071 ±.006	0.071 ±.003	0.213
1.80X002	2.00 ±0.15	1.80 ±0.08	5.60	0.079 ±.006	0.071 ±.003	0.221
1.80X002.24	2.24 ±0.15	1.80 ±0.08	5.84	0.088 ±.006	0.071 ±.003	0.230
1.80X002.5	2.50 ±0.15	1.80 ±0.08	6.10	0.098 ±.006	0.071 ±.003	0.240
1.80X002.8	2.80 ±0.15	1.80 ±0.08	6.40	0.110 ±.006	0.071 ±.003	0.252
1.80X003.15	3.15 ±0.15	1.80 ±0.08	6.75	0.124 ±.006	0.071 ±.003	0.266
1.80X003.55	3.55 ±0.15	1.80 ±0.08	7.15	0.140 ±.006	0.071 ±.003	0.282
1.80X003.75	3.75 ±0.15	1.80 ±0.08	7.35	0.148 ±.006	0.071 ±.003	0.290
1.80X004	4.00 ±0.15	1.80 ±0.08	7.60	0.158 ±.006	0.071 ±.003	0.299
1.80X004.5	4.50 ±0.15	1.80 ±0.08	8.10	0.177 ±.006	0.071 ±.003	0.319
1.80X004.75	4.75 ±0.15	1.80 ±0.08	8.35	0.187 ±.006	0.071 ±.003	0.329
1.80X004.87	4.87 ±0.15	1.80 ±0.08	8.47	0.192 ±.006	0.071 ±.003	0.334
1.80X005	5.00 ±0.15	1.80 ±0.08	8.60	0.197 ±.006	0.071 ±.003	0.339
1.80X005.15	5.15 ±0.15	1.80 ±0.08	8.75	0.203 ±.006	0.071 ±.003	0.345
1.80X005.3	5.30 ±0.15	1.80 ±0.08	8.90	0.209 ±.006	0.071 ±.003	0.351
1.80X005.6	5.60 ±0.15	1.80 ±0.08	9.20	0.221 ±.006	0.071 ±.003	0.362
1.80X006	6.00 ±0.15	1.80 ±0.08	9.60	0.236 ±.006	0.071 ±.003	0.378
1.80X006.3	6.30 ±0.15	1.80 ±0.08	9.90	0.248 ±.006	0.071 ±.003	0.390
1.80X006.7	6.70 ±0.15	1.80 ±0.08	10.30	0.264 ±.006	0.071 ±.003	0.406
1.80X006.9	6.90 ±0.15	1.80 ±0.08	10.50	0.272 ±.006	0.071 ±.003	0.414
1.80X007.1	7.10 ±0.15	1.80 ±0.08	10.70	0.280 ±.006	0.071 ±.003	0.421
1.80X007.5	7.50 ±0.15	1.80 ±0.08	11.10	0.295 ±.006	0.071 ±.003	0.437
1.80X008	8.00 ±0.15	1.80 ±0.08	11.60	0.315 ±.006	0.071 ±.003	0.457
1.80X008.5	8.50 ±0.15	1.80 ±0.08	12.10	0.335 ±.006	0.071 ±.003	0.477
1.80X008.75	8.75 ±0.15	1.80 ±0.08	12.35	0.344 ±.006	0.071 ±.003	0.486
1.80X009	9.00 ±0.15	1.80 ±0.08	12.60	0.354 ±.006	0.071 ±.003	0.496
1.80X009.5	9.50 ±0.15	1.80 ±0.08	13.10	0.374 ±.006	0.071 ±.003	0.516
1.80X010	10.00 ±0.15	1.80 ±0.08	13.60	0.394 ±.006	0.071 ±.003	0.536
1.80X010.6	10.60 ±0.20	1.80 ±0.08	14.20	0.417 ±.008	0.071 ±.003	0.559
1.80X011.2	11.20 ±0.20	1.80 ±0.08	14.80	0.441 ±.008	0.071 ±.003	0.583
1.80X011.6	11.60 ±0.20	1.80 ±0.08	15.20	0.457 ±.008	0.071 ±.003	0.599
1.80X011.8	11.80 ±0.20	1.80 ±0.08	15.40	0.465 ±.008	0.071 ±.003	0.607
1.80X012.1	12.10 ±0.20	1.80 ±0.08	15.70	0.476 ±.008	0.071 ±.003	0.618
1.80X012.5	12.50 ±0.20	1.80 ±0.08	16.10	0.492 ±.008	0.071 ±.003	0.634
1.80X012.8	12.80 ±0.20	1.80 ±0.08	16.40	0.504 ±.008	0.071 ±.003	0.646
1.80X013.2	13.20 ±0.20	1.80 ±0.08	16.80	0.520 ±.008	0.071 ±.003	0.662
1.80X014	14.00 ±0.20	1.80 ±0.08	17.60	0.551 ±.008	0.071 ±.003	0.693
1.80X014.5	14.50 ±0.20	1.80 ±0.08	18.10	0.571 ±.008	0.071 ±.003	0.713
1.80X015	15.00 ±0.20	1.80 ±0.08	18.60	0.591 ±.008	0.071 ±.003	0.733
1.80X015.5	15.50 ±0.20	1.80 ±0.08	19.10	0.610 ±.008	0.071 ±.003	0.752
1.80X016	16.00 ±0.20	1.80 ±0.08	19.60	0.630 ±.008	0.071 ±.003	0.772
1.80X017	17.00 ±0.20	1.80 ±0.08	20.60	0.669 ±.008	0.071 ±.003	0.811
1.80X018	18.00 ±0.20	1.80 ±0.08	21.60	0.709 ±.008	0.071 ±.003	0.851
1.80X019	19.00 ±0.25	1.80 ±0.08	22.60	0.748 ±.010	0.071 ±.003	0.890
1.80X020	20.00 ±0.25	1.80 ±0.08	23.60	0.787 ±.010	0.071 ±.003	0.929
1.80X020.6	20.60 ±0.25	1.80 ±0.08	24.20	0.811 ±.010	0.071 ±.003	0.953
1.80X021.2	21.20 ±0.25	1.80 ±0.08	24.80	0.835 ±.010	0.071 ±.003	0.977
1.80X022.4	22.40 ±0.25	1.80 ±0.08	26.00	0.882 ±.010	0.071 ±.003	1.024
1.80X023.6	23.60 ±0.25	1.80 ±0.08	27.20	0.929 ±.010	0.071 ±.003	1.071
1.80X024.3	24.30 ±0.25	1.80 ±0.08	27.90	0.957 ±.010	0.071 ±.003	1.099
1.80X025	25.00 ±0.25	1.80 ±0.08	28.60	0.984 ±.010	0.071 ±.003	1.126
1.80X025.8	25.80 ±0.25	1.80 ±0.08	29.40	1.016 ±.010	0.071 ±.003	1.158
1.80X026.5	26.50 ±0.25	1.80 ±0.08	30.10	1.043 ±.010	0.071 ±.003	1.185
1.80X027.3	27.30 ±0.25	1.80 ±0.08	30.90	1.075 ±.010	0.071 ±.003	1.217
1.80X028	28.00 ±0.25	1.80 ±0.08	31.60	1.102 ±.010	0.071 ±.003	1.244
1.80X030	30.00 ±0.25	1.80 ±0.08	33.60	1.181 ±.010	0.071 ±.003	1.323
1.80X031.5	31.50 ±0.35	1.80 ±0.08	35.10	1.240 ±.014	0.071 ±.003	1.382
1.80X032.5	32.50 ±0.35	1.80 ±0.08	36.10	1.280 ±.014	0.071 ±.003	1.421
1.80X033.5	33.50 ±0.35	1.80 ±0.08	37.10	1.319 ±.014	0.071 ±.003	1.461
1.80X034.5	34.50 ±0.35	1.80 ±0.08	38.10	1.358 ±.014	0.071 ±.003	1.500
1.80X035.5	35.50 ±0.35	1.80 ±0.08	39.10	1.398 ±.014	0.071 ±.003	1.540
1.80X036.5	36.50 ±0.35	1.80 ±0.08	40.10	1.437 ±.014	0.071 ±.003	1.579
1.80X037.5	37.50 ±0.35	1.80 ±0.08	41.10	1.476 ±.014	0.071 ±.003	1.618
1.80X038.7	38.70 ±0.35	1.80 ±0.08	42.30	1.524 ±.014	0.071 ±.003	1.666
1.80X040	40.00 ±0.35	1.80 ±0.08	43.60	1.575 ±.014	0.071 ±.003	1.717
1.80X041.2	41.20 ±0.35	1.80 ±0.08	44.80	1.622 ±.014	0.071 ±.003	1.764
1.80X042.5	42.50 ±0.35	1.80 ±0.08	46.10	1.673 ±.014	0.071 ±.003	1.815
1.80X043.7	43.70 ±0.35	1.80 ±0.08	47.30	1.720 ±.014	0.071 ±.003	1.862
1.80X045	45.00 ±0.35	1.80 ±0.08	48.60	1.772 ±.014	0.071 ±.003	1.914
1.80X046.2	46.20 ±0.35	1.80 ±0.08	49.80	1.819 ±.014	0.071 ±.003	1.961
1.80X047.5	47.50 ±0.35	1.80 ±0.08	51.10	1.870 ±.014	0.071 ±.003	2.012
1.80X048.7	48.70 ±0.35	1.80 ±0.08	52.30	1.917 ±.014	0.071 ±.003	2.059
1.80X050	50.00 ±0.35	1.80 ±0.08	53.60	1.968 ±.014	0.071 ±.003	2.111

2.65 mm cross-section

CS 2.65 mm · 71 sizes

NF T 47-501 2.65 mm cross-section size table
Code (CS×ID)	ID (mm)	CS (mm)	OD (mm)	ID (in)	CS (in)	OD (in)
2.65X009	9.00 ±0.15	2.65 ±0.09	14.30	0.354 ±.006	0.104 ±.004	0.562
2.65X009.5	9.50 ±0.15	2.65 ±0.09	14.80	0.374 ±.006	0.104 ±.004	0.582
2.65X010	10.00 ±0.15	2.65 ±0.09	15.30	0.394 ±.006	0.104 ±.004	0.602
2.65X010.6	10.60 ±0.20	2.65 ±0.09	15.90	0.417 ±.008	0.104 ±.004	0.625
2.65X011.2	11.20 ±0.20	2.65 ±0.09	16.50	0.441 ±.008	0.104 ±.004	0.649
2.65X011.6	11.60 ±0.20	2.65 ±0.09	16.90	0.457 ±.008	0.104 ±.004	0.665
2.65X011.8	11.80 ±0.20	2.65 ±0.09	17.10	0.465 ±.008	0.104 ±.004	0.673
2.65X012.1	12.10 ±0.20	2.65 ±0.09	17.40	0.476 ±.008	0.104 ±.004	0.684
2.65X012.5	12.50 ±0.20	2.65 ±0.09	17.80	0.492 ±.008	0.104 ±.004	0.700
2.65X012.8	12.80 ±0.20	2.65 ±0.09	18.10	0.504 ±.008	0.104 ±.004	0.712
2.65X013.2	13.20 ±0.20	2.65 ±0.09	18.50	0.520 ±.008	0.104 ±.004	0.728
2.65X014	14.00 ±0.20	2.65 ±0.09	19.30	0.551 ±.008	0.104 ±.004	0.759
2.65X014.5	14.50 ±0.20	2.65 ±0.09	19.80	0.571 ±.008	0.104 ±.004	0.779
2.65X015	15.00 ±0.20	2.65 ±0.09	20.30	0.591 ±.008	0.104 ±.004	0.799
2.65X016	16.00 ±0.20	2.65 ±0.09	21.30	0.630 ±.008	0.104 ±.004	0.838
2.65X017	17.00 ±0.20	2.65 ±0.09	22.30	0.669 ±.008	0.104 ±.004	0.877
2.65X018	18.00 ±0.20	2.65 ±0.09	23.30	0.709 ±.008	0.104 ±.004	0.917
2.65X019	19.00 ±0.25	2.65 ±0.09	24.30	0.748 ±.010	0.104 ±.004	0.956
2.65X020	20.00 ±0.25	2.65 ±0.09	25.30	0.787 ±.010	0.104 ±.004	0.995
2.65X020.6	20.60 ±0.25	2.65 ±0.09	25.90	0.811 ±.010	0.104 ±.004	1.019
2.65X021.2	21.20 ±0.25	2.65 ±0.09	26.50	0.835 ±.010	0.104 ±.004	1.043
2.65X022.4	22.40 ±0.25	2.65 ±0.09	27.70	0.882 ±.010	0.104 ±.004	1.090
2.65X023.6	23.60 ±0.25	2.65 ±0.09	28.90	0.929 ±.010	0.104 ±.004	1.137
2.65X024.3	24.30 ±0.25	2.65 ±0.09	29.60	0.957 ±.010	0.104 ±.004	1.165
2.65X025	25.00 ±0.25	2.65 ±0.09	30.30	0.984 ±.010	0.104 ±.004	1.192
2.65X025.8	25.80 ±0.25	2.65 ±0.09	31.10	1.016 ±.010	0.104 ±.004	1.224
2.65X026.5	26.50 ±0.25	2.65 ±0.09	31.80	1.043 ±.010	0.104 ±.004	1.251
2.65X027.3	27.30 ±0.25	2.65 ±0.09	32.60	1.075 ±.010	0.104 ±.004	1.283
2.65X028	28.00 ±0.25	2.65 ±0.09	33.30	1.102 ±.010	0.104 ±.004	1.310
2.65X030	30.00 ±0.25	2.65 ±0.09	35.30	1.181 ±.010	0.104 ±.004	1.389
2.65X031.5	31.50 ±0.35	2.65 ±0.09	36.80	1.240 ±.014	0.104 ±.004	1.448
2.65X032.5	32.50 ±0.35	2.65 ±0.09	37.80	1.280 ±.014	0.104 ±.004	1.488
2.65X033.5	33.50 ±0.35	2.65 ±0.09	38.80	1.319 ±.014	0.104 ±.004	1.527
2.65X034.5	34.50 ±0.35	2.65 ±0.09	39.80	1.358 ±.014	0.104 ±.004	1.566
2.65X035.5	35.50 ±0.35	2.65 ±0.09	40.80	1.398 ±.014	0.104 ±.004	1.606
2.65X036.5	36.50 ±0.35	2.65 ±0.09	41.80	1.437 ±.014	0.104 ±.004	1.645
2.65X037.5	37.50 ±0.35	2.65 ±0.09	42.80	1.476 ±.014	0.104 ±.004	1.684
2.65X038.7	38.70 ±0.35	2.65 ±0.09	44.00	1.524 ±.014	0.104 ±.004	1.732
2.65X040	40.00 ±0.35	2.65 ±0.09	45.30	1.575 ±.014	0.104 ±.004	1.783
2.65X041.2	41.20 ±0.35	2.65 ±0.09	46.50	1.622 ±.014	0.104 ±.004	1.830
2.65X042.5	42.50 ±0.35	2.65 ±0.09	47.80	1.673 ±.014	0.104 ±.004	1.881
2.65X043.7	43.70 ±0.35	2.65 ±0.09	49.00	1.720 ±.014	0.104 ±.004	1.928
2.65X045	45.00 ±0.35	2.65 ±0.09	50.30	1.772 ±.014	0.104 ±.004	1.980
2.65X046.2	46.20 ±0.35	2.65 ±0.09	51.50	1.819 ±.014	0.104 ±.004	2.027
2.65X047.5	47.50 ±0.35	2.65 ±0.09	52.80	1.870 ±.014	0.104 ±.004	2.078
2.65X048.7	48.70 ±0.35	2.65 ±0.09	54.00	1.917 ±.014	0.104 ±.004	2.125
2.65X050	50.00 ±0.35	2.65 ±0.09	55.30	1.968 ±.014	0.104 ±.004	2.176
2.65X051.5	51.50 ±0.40	2.65 ±0.09	56.80	2.028 ±.016	0.104 ±.004	2.236
2.65X053	53.00 ±0.40	2.65 ±0.09	58.30	2.087 ±.016	0.104 ±.004	2.295
2.65X054.5	54.50 ±0.40	2.65 ±0.09	59.80	2.146 ±.016	0.104 ±.004	2.354
2.65X056	56.00 ±0.40	2.65 ±0.09	61.30	2.205 ±.016	0.104 ±.004	2.413
2.65X058	58.00 ±0.40	2.65 ±0.09	63.30	2.284 ±.016	0.104 ±.004	2.492
2.65X060	60.00 ±0.40	2.65 ±0.09	65.30	2.362 ±.016	0.104 ±.004	2.570
2.65X061.5	61.50 ±0.40	2.65 ±0.09	66.80	2.421 ±.016	0.104 ±.004	2.629
2.65X063	63.00 ±0.40	2.65 ±0.09	68.30	2.480 ±.016	0.104 ±.004	2.688
2.65X065	65.00 ±0.40	2.65 ±0.09	70.30	2.559 ±.016	0.104 ±.004	2.767
2.65X067	67.00 ±0.40	2.65 ±0.09	72.30	2.638 ±.016	0.104 ±.004	2.846
2.65X069	69.00 ±0.40	2.65 ±0.09	74.30	2.716 ±.016	0.104 ±.004	2.925
2.65X071	71.00 ±0.40	2.65 ±0.09	76.30	2.795 ±.016	0.104 ±.004	3.003
2.65X073	73.00 ±0.40	2.65 ±0.09	78.30	2.874 ±.016	0.104 ±.004	3.082
2.65X075	75.00 ±0.40	2.65 ±0.09	80.30	2.953 ±.016	0.104 ±.004	3.161
2.65X077.5	77.50 ±0.40	2.65 ±0.09	82.80	3.051 ±.016	0.104 ±.004	3.259
2.65X080	80.00 ±0.40	2.65 ±0.09	85.30	3.150 ±.016	0.104 ±.004	3.358
2.65X082.5	82.50 ±0.50	2.65 ±0.09	87.80	3.248 ±.020	0.104 ±.004	3.456
2.65X085	85.00 ±0.50	2.65 ±0.09	90.30	3.346 ±.020	0.104 ±.004	3.554
2.65X087.5	87.50 ±0.50	2.65 ±0.09	92.80	3.445 ±.020	0.104 ±.004	3.653
2.65X090	90.00 ±0.50	2.65 ±0.09	95.30	3.543 ±.020	0.104 ±.004	3.751
2.65X092.5	92.50 ±0.50	2.65 ±0.09	97.80	3.642 ±.020	0.104 ±.004	3.850
2.65X095	95.00 ±0.50	2.65 ±0.09	100.30	3.740 ±.020	0.104 ±.004	3.948
2.65X097.5	97.50 ±0.50	2.65 ±0.09	102.80	3.839 ±.020	0.104 ±.004	4.047
2.65X100	100.00 ±0.50	2.65 ±0.09	105.30	3.937 ±.020	0.104 ±.004	4.145

3.55 mm cross-section

CS 3.55 mm · 85 sizes

NF T 47-501 3.55 mm cross-section size table
Code (CS×ID)	ID (mm)	CS (mm)	OD (mm)	ID (in)	CS (in)	OD (in)
3.55X014	14.00 ±0.20	3.55 ±0.10	21.10	0.551 ±.008	0.140 ±.004	0.831
3.55X014.5	14.50 ±0.20	3.55 ±0.10	21.60	0.571 ±.008	0.140 ±.004	0.851
3.55X015	15.00 ±0.20	3.55 ±0.10	22.10	0.591 ±.008	0.140 ±.004	0.871
3.55X015.5	15.50 ±0.20	3.55 ±0.10	22.60	0.610 ±.008	0.140 ±.004	0.890
3.55X016	16.00 ±0.20	3.55 ±0.10	23.10	0.630 ±.008	0.140 ±.004	0.910
3.55X017	17.00 ±0.20	3.55 ±0.10	24.10	0.669 ±.008	0.140 ±.004	0.949
3.55X018	18.00 ±0.20	3.55 ±0.10	25.10	0.709 ±.008	0.140 ±.004	0.989
3.55X019	19.00 ±0.25	3.55 ±0.10	26.10	0.748 ±.010	0.140 ±.004	1.028
3.55X020	20.00 ±0.25	3.55 ±0.10	27.10	0.787 ±.010	0.140 ±.004	1.067
3.55X020.6	20.60 ±0.25	3.55 ±0.10	27.70	0.811 ±.010	0.140 ±.004	1.091
3.55X021.2	21.20 ±0.25	3.55 ±0.10	28.30	0.835 ±.010	0.140 ±.004	1.115
3.55X022.4	22.40 ±0.25	3.55 ±0.10	29.50	0.882 ±.010	0.140 ±.004	1.162
3.55X023.6	23.60 ±0.25	3.55 ±0.10	30.70	0.929 ±.010	0.140 ±.004	1.209
3.55X024.3	24.30 ±0.25	3.55 ±0.10	31.40	0.957 ±.010	0.140 ±.004	1.237
3.55X025	25.00 ±0.25	3.55 ±0.10	32.10	0.984 ±.010	0.140 ±.004	1.264
3.55X025.8	25.80 ±0.25	3.55 ±0.10	32.90	1.016 ±.010	0.140 ±.004	1.296
3.55X026.5	26.50 ±0.25	3.55 ±0.10	33.60	1.043 ±.010	0.140 ±.004	1.323
3.55X027.3	27.30 ±0.25	3.55 ±0.10	34.40	1.075 ±.010	0.140 ±.004	1.355
3.55X028	28.00 ±0.25	3.55 ±0.10	35.10	1.102 ±.010	0.140 ±.004	1.382
3.55X030	30.00 ±0.25	3.55 ±0.10	37.10	1.181 ±.010	0.140 ±.004	1.461
3.55X031.5	31.50 ±0.35	3.55 ±0.10	38.60	1.240 ±.014	0.140 ±.004	1.520
3.55X032.5	32.50 ±0.35	3.55 ±0.10	39.60	1.280 ±.014	0.140 ±.004	1.560
3.55X033.5	33.50 ±0.35	3.55 ±0.10	40.60	1.319 ±.014	0.140 ±.004	1.599
3.55X034.5	34.50 ±0.35	3.55 ±0.10	41.60	1.358 ±.014	0.140 ±.004	1.638
3.55X035.5	35.50 ±0.35	3.55 ±0.10	42.60	1.398 ±.014	0.140 ±.004	1.678
3.55X036.5	36.50 ±0.35	3.55 ±0.10	43.60	1.437 ±.014	0.140 ±.004	1.717
3.55X037.5	37.50 ±0.35	3.55 ±0.10	44.60	1.476 ±.014	0.140 ±.004	1.756
3.55X038.7	38.70 ±0.35	3.55 ±0.10	45.80	1.524 ±.014	0.140 ±.004	1.804
3.55X040	40.00 ±0.35	3.55 ±0.10	47.10	1.575 ±.014	0.140 ±.004	1.855
3.55X041.2	41.20 ±0.35	3.55 ±0.10	48.30	1.622 ±.014	0.140 ±.004	1.902
3.55X042.5	42.50 ±0.35	3.55 ±0.10	49.60	1.673 ±.014	0.140 ±.004	1.953
3.55X043.7	43.70 ±0.35	3.55 ±0.10	50.80	1.720 ±.014	0.140 ±.004	2.000
3.55X045	45.00 ±0.35	3.55 ±0.10	52.10	1.772 ±.014	0.140 ±.004	2.052
3.55X046.2	46.20 ±0.35	3.55 ±0.10	53.30	1.819 ±.014	0.140 ±.004	2.099
3.55X047.5	47.50 ±0.35	3.55 ±0.10	54.60	1.870 ±.014	0.140 ±.004	2.150
3.55X048.7	48.70 ±0.35	3.55 ±0.10	55.80	1.917 ±.014	0.140 ±.004	2.197
3.55X050	50.00 ±0.35	3.55 ±0.10	57.10	1.968 ±.014	0.140 ±.004	2.248
3.55X051.5	51.50 ±0.40	3.55 ±0.10	58.60	2.028 ±.016	0.140 ±.004	2.308
3.55X053	53.00 ±0.40	3.55 ±0.10	60.10	2.087 ±.016	0.140 ±.004	2.367
3.55X054.5	54.50 ±0.40	3.55 ±0.10	61.60	2.146 ±.016	0.140 ±.004	2.426
3.55X056	56.00 ±0.40	3.55 ±0.10	63.10	2.205 ±.016	0.140 ±.004	2.485
3.55X058	58.00 ±0.40	3.55 ±0.10	65.10	2.284 ±.016	0.140 ±.004	2.564
3.55X060	60.00 ±0.40	3.55 ±0.10	67.10	2.362 ±.016	0.140 ±.004	2.642
3.55X061.5	61.50 ±0.40	3.55 ±0.10	68.60	2.421 ±.016	0.140 ±.004	2.701
3.55X063	63.00 ±0.40	3.55 ±0.10	70.10	2.480 ±.016	0.140 ±.004	2.760
3.55X065	65.00 ±0.40	3.55 ±0.10	72.10	2.559 ±.016	0.140 ±.004	2.839
3.55X067	67.00 ±0.40	3.55 ±0.10	74.10	2.638 ±.016	0.140 ±.004	2.918
3.55X069	69.00 ±0.40	3.55 ±0.10	76.10	2.716 ±.016	0.140 ±.004	2.997
3.55X071	71.00 ±0.40	3.55 ±0.10	78.10	2.795 ±.016	0.140 ±.004	3.075
3.55X073	73.00 ±0.40	3.55 ±0.10	80.10	2.874 ±.016	0.140 ±.004	3.154
3.55X075	75.00 ±0.40	3.55 ±0.10	82.10	2.953 ±.016	0.140 ±.004	3.233
3.55X077.5	77.50 ±0.40	3.55 ±0.10	84.60	3.051 ±.016	0.140 ±.004	3.331
3.55X080	80.00 ±0.40	3.55 ±0.10	87.10	3.150 ±.016	0.140 ±.004	3.430
3.55X082.5	82.50 ±0.50	3.55 ±0.10	89.60	3.248 ±.020	0.140 ±.004	3.528
3.55X085	85.00 ±0.50	3.55 ±0.10	92.10	3.346 ±.020	0.140 ±.004	3.627
3.55X087.5	87.50 ±0.50	3.55 ±0.10	94.60	3.445 ±.020	0.140 ±.004	3.725
3.55X090	90.00 ±0.50	3.55 ±0.10	97.10	3.543 ±.020	0.140 ±.004	3.823
3.55X092.5	92.50 ±0.50	3.55 ±0.10	99.60	3.642 ±.020	0.140 ±.004	3.922
3.55X095	95.00 ±0.50	3.55 ±0.10	102.10	3.740 ±.020	0.140 ±.004	4.020
3.55X097.5	97.50 ±0.50	3.55 ±0.10	104.60	3.839 ±.020	0.140 ±.004	4.119
3.55X100	100.00 ±0.50	3.55 ±0.10	107.10	3.937 ±.020	0.140 ±.004	4.217
3.55X103	103.00 ±0.50	3.55 ±0.10	110.10	4.055 ±.020	0.140 ±.004	4.335
3.55X106	106.00 ±0.50	3.55 ±0.10	113.10	4.173 ±.020	0.140 ±.004	4.453
3.55X109	109.00 ±0.50	3.55 ±0.10	116.10	4.291 ±.020	0.140 ±.004	4.571
3.55X112	112.00 ±0.50	3.55 ±0.10	119.10	4.409 ±.020	0.140 ±.004	4.689
3.55X115	115.00 ±0.50	3.55 ±0.10	122.10	4.528 ±.020	0.140 ±.004	4.808
3.55X118	118.00 ±0.50	3.55 ±0.10	125.10	4.646 ±.020	0.140 ±.004	4.926
3.55X122	122.00 ±0.70	3.55 ±0.10	129.10	4.803 ±.028	0.140 ±.004	5.083
3.55X125	125.00 ±0.70	3.55 ±0.10	132.10	4.921 ±.028	0.140 ±.004	5.201
3.55X128	128.00 ±0.70	3.55 ±0.10	135.10	5.039 ±.028	0.140 ±.004	5.319
3.55X132	132.00 ±0.70	3.55 ±0.10	139.10	5.197 ±.028	0.140 ±.004	5.477
3.55X136	136.00 ±0.70	3.55 ±0.10	143.10	5.354 ±.028	0.140 ±.004	5.634
3.55X140	140.00 ±0.70	3.55 ±0.10	147.10	5.512 ±.028	0.140 ±.004	5.792
3.55X145	145.00 ±0.70	3.55 ±0.10	152.10	5.709 ±.028	0.140 ±.004	5.989
3.55X150	150.00 ±0.70	3.55 ±0.10	157.10	5.905 ±.028	0.140 ±.004	6.186
3.55X155	155.00 ±0.70	3.55 ±0.10	162.10	6.102 ±.028	0.140 ±.004	6.382
3.55X160	160.00 ±0.70	3.55 ±0.10	167.10	6.299 ±.028	0.140 ±.004	6.579
3.55X165	165.00 ±0.70	3.55 ±0.10	172.10	6.496 ±.028	0.140 ±.004	6.776
3.55X170	170.00 ±0.70	3.55 ±0.10	177.10	6.693 ±.028	0.140 ±.004	6.973
3.55X175	175.00 ±0.70	3.55 ±0.10	182.10	6.890 ±.028	0.140 ±.004	7.170
3.55X180	180.00 ±0.70	3.55 ±0.10	187.10	7.087 ±.028	0.140 ±.004	7.367
3.55X185	185.00 ±0.90	3.55 ±0.10	192.10	7.284 ±.035	0.140 ±.004	7.564
3.55X190	190.00 ±0.90	3.55 ±0.10	197.10	7.480 ±.035	0.140 ±.004	7.760
3.55X195	195.00 ±0.90	3.55 ±0.10	202.10	7.677 ±.035	0.140 ±.004	7.957
3.55X200	200.00 ±0.90	3.55 ±0.10	207.10	7.874 ±.035	0.140 ±.004	8.154

5.3 mm cross-section

CS 5.3 mm · 108 sizes

NF T 47-501 5.3 mm cross-section size table
Code (CS×ID)	ID (mm)	CS (mm)	OD (mm)	ID (in)	CS (in)	OD (in)
5.30X037.5	37.50 ±0.35	5.30 ±0.13	48.10	1.476 ±.014	0.209 ±.005	1.894
5.30X038.7	38.70 ±0.35	5.30 ±0.13	49.30	1.524 ±.014	0.209 ±.005	1.942
5.30X040	40.00 ±0.35	5.30 ±0.13	50.60	1.575 ±.014	0.209 ±.005	1.993
5.30X041.2	41.20 ±0.35	5.30 ±0.13	51.80	1.622 ±.014	0.209 ±.005	2.040
5.30X042.5	42.50 ±0.35	5.30 ±0.13	53.10	1.673 ±.014	0.209 ±.005	2.091
5.30X043.7	43.70 ±0.35	5.30 ±0.13	54.30	1.720 ±.014	0.209 ±.005	2.139
5.30X045	45.00 ±0.35	5.30 ±0.13	55.60	1.772 ±.014	0.209 ±.005	2.190
5.30X046.2	46.20 ±0.35	5.30 ±0.13	56.80	1.819 ±.014	0.209 ±.005	2.237
5.30X047.5	47.50 ±0.35	5.30 ±0.13	58.10	1.870 ±.014	0.209 ±.005	2.288
5.30X048.7	48.70 ±0.35	5.30 ±0.13	59.30	1.917 ±.014	0.209 ±.005	2.335
5.30X050	50.00 ±0.35	5.30 ±0.13	60.60	1.968 ±.014	0.209 ±.005	2.386
5.30X051.5	51.50 ±0.40	5.30 ±0.13	62.10	2.028 ±.016	0.209 ±.005	2.446
5.30X053	53.00 ±0.40	5.30 ±0.13	63.60	2.087 ±.016	0.209 ±.005	2.505
5.30X054.5	54.50 ±0.40	5.30 ±0.13	65.10	2.146 ±.016	0.209 ±.005	2.564
5.30X056	56.00 ±0.40	5.30 ±0.13	66.60	2.205 ±.016	0.209 ±.005	2.623
5.30X058	58.00 ±0.40	5.30 ±0.13	68.60	2.284 ±.016	0.209 ±.005	2.702
5.30X060	60.00 ±0.40	5.30 ±0.13	70.60	2.362 ±.016	0.209 ±.005	2.780
5.30X061.5	61.50 ±0.40	5.30 ±0.13	72.10	2.421 ±.016	0.209 ±.005	2.839
5.30X063	63.00 ±0.40	5.30 ±0.13	73.60	2.480 ±.016	0.209 ±.005	2.898
5.30X065	65.00 ±0.40	5.30 ±0.13	75.60	2.559 ±.016	0.209 ±.005	2.977
5.30X067	67.00 ±0.40	5.30 ±0.13	77.60	2.638 ±.016	0.209 ±.005	3.056
5.30X069	69.00 ±0.40	5.30 ±0.13	79.60	2.716 ±.016	0.209 ±.005	3.135
5.30X071	71.00 ±0.40	5.30 ±0.13	81.60	2.795 ±.016	0.209 ±.005	3.213
5.30X073	73.00 ±0.40	5.30 ±0.13	83.60	2.874 ±.016	0.209 ±.005	3.292
5.30X075	75.00 ±0.40	5.30 ±0.13	85.60	2.953 ±.016	0.209 ±.005	3.371
5.30X077.5	77.50 ±0.40	5.30 ±0.13	88.10	3.051 ±.016	0.209 ±.005	3.469
5.30X080	80.00 ±0.40	5.30 ±0.13	90.60	3.150 ±.016	0.209 ±.005	3.568
5.30X082.5	82.50 ±0.50	5.30 ±0.13	93.10	3.248 ±.020	0.209 ±.005	3.666
5.30X085	85.00 ±0.50	5.30 ±0.13	95.60	3.346 ±.020	0.209 ±.005	3.764
5.30X087.5	87.50 ±0.50	5.30 ±0.13	98.10	3.445 ±.020	0.209 ±.005	3.863
5.30X090	90.00 ±0.50	5.30 ±0.13	100.60	3.543 ±.020	0.209 ±.005	3.961
5.30X092.5	92.50 ±0.50	5.30 ±0.13	103.10	3.642 ±.020	0.209 ±.005	4.060
5.30X095	95.00 ±0.50	5.30 ±0.13	105.60	3.740 ±.020	0.209 ±.005	4.158
5.30X097.5	97.50 ±0.50	5.30 ±0.13	108.10	3.839 ±.020	0.209 ±.005	4.257
5.30X100	100.00 ±0.50	5.30 ±0.13	110.60	3.937 ±.020	0.209 ±.005	4.355
5.30X103	103.00 ±0.50	5.30 ±0.13	113.60	4.055 ±.020	0.209 ±.005	4.473
5.30X106	106.00 ±0.50	5.30 ±0.13	116.60	4.173 ±.020	0.209 ±.005	4.591
5.30X109	109.00 ±0.50	5.30 ±0.13	119.60	4.291 ±.020	0.209 ±.005	4.709
5.30X112	112.00 ±0.50	5.30 ±0.13	122.60	4.409 ±.020	0.209 ±.005	4.827
5.30X115	115.00 ±0.50	5.30 ±0.13	125.60	4.528 ±.020	0.209 ±.005	4.946
5.30X118	118.00 ±0.50	5.30 ±0.13	128.60	4.646 ±.020	0.209 ±.005	5.064
5.30X122	122.00 ±0.70	5.30 ±0.13	132.60	4.803 ±.028	0.209 ±.005	5.221
5.30X125	125.00 ±0.70	5.30 ±0.13	135.60	4.921 ±.028	0.209 ±.005	5.339
5.30X128	128.00 ±0.70	5.30 ±0.13	138.60	5.039 ±.028	0.209 ±.005	5.457
5.30X132	132.00 ±0.70	5.30 ±0.13	142.60	5.197 ±.028	0.209 ±.005	5.615
5.30X136	136.00 ±0.70	5.30 ±0.13	146.60	5.354 ±.028	0.209 ±.005	5.772
5.30X140	140.00 ±0.70	5.30 ±0.13	150.60	5.512 ±.028	0.209 ±.005	5.930
5.30X145	145.00 ±0.70	5.30 ±0.13	155.60	5.709 ±.028	0.209 ±.005	6.127
5.30X150	150.00 ±0.70	5.30 ±0.13	160.60	5.905 ±.028	0.209 ±.005	6.324
5.30X155	155.00 ±0.70	5.30 ±0.13	165.60	6.102 ±.028	0.209 ±.005	6.520
5.30X160	160.00 ±0.70	5.30 ±0.13	170.60	6.299 ±.028	0.209 ±.005	6.717
5.30X165	165.00 ±0.70	5.30 ±0.13	175.60	6.496 ±.028	0.209 ±.005	6.914
5.30X170	170.00 ±0.70	5.30 ±0.13	180.60	6.693 ±.028	0.209 ±.005	7.111
5.30X172.5	172.50 ±0.70	5.30 ±0.13	183.10	6.791 ±.028	0.209 ±.005	7.209
5.30X175	175.00 ±0.70	5.30 ±0.13	185.60	6.890 ±.028	0.209 ±.005	7.308
5.30X177.5	177.50 ±0.70	5.30 ±0.13	188.10	6.988 ±.028	0.209 ±.005	7.406
5.30X180	180.00 ±0.70	5.30 ±0.13	190.60	7.087 ±.028	0.209 ±.005	7.505
5.30X182.5	182.50 ±0.90	5.30 ±0.13	193.10	7.185 ±.035	0.209 ±.005	7.603
5.30X185	185.00 ±0.90	5.30 ±0.13	195.60	7.284 ±.035	0.209 ±.005	7.702
5.30X187.5	187.50 ±0.90	5.30 ±0.13	198.10	7.382 ±.035	0.209 ±.005	7.800
5.30X190	190.00 ±0.90	5.30 ±0.13	200.60	7.480 ±.035	0.209 ±.005	7.898
5.30X195	195.00 ±0.90	5.30 ±0.13	205.60	7.677 ±.035	0.209 ±.005	8.095
5.30X200	200.00 ±0.90	5.30 ±0.13	210.60	7.874 ±.035	0.209 ±.005	8.292
5.30X203	203.00 ±0.90	5.30 ±0.13	213.60	7.992 ±.035	0.209 ±.005	8.410
5.30X206	206.00 ±0.90	5.30 ±0.13	216.60	8.110 ±.035	0.209 ±.005	8.528
5.30X212	212.00 ±0.90	5.30 ±0.13	222.60	8.347 ±.035	0.209 ±.005	8.764
5.30X218	218.00 ±0.90	5.30 ±0.13	228.60	8.583 ±.035	0.209 ±.005	9.001
5.30X224	224.00 ±0.90	5.30 ±0.13	234.60	8.819 ±.035	0.209 ±.005	9.237
5.30X230	230.00 ±0.90	5.30 ±0.13	240.60	9.055 ±.035	0.209 ±.005	9.473
5.30X236	236.00 ±0.90	5.30 ±0.13	246.60	9.291 ±.035	0.209 ±.005	9.709
5.30X239	239.00 ±0.90	5.30 ±0.13	249.60	9.409 ±.035	0.209 ±.005	9.827
5.30X243	243.00 ±0.90	5.30 ±0.13	253.60	9.567 ±.035	0.209 ±.005	9.985
5.30X250	250.00 ±0.90	5.30 ±0.13	260.60	9.842 ±.035	0.209 ±.005	10.260
5.30X254	254.00 ±1.20	5.30 ±0.13	264.60	10.000 ±.047	0.209 ±.005	10.418
5.30X258	258.00 ±1.20	5.30 ±0.13	268.60	10.158 ±.047	0.209 ±.005	10.575
5.30X261	261.00 ±1.20	5.30 ±0.13	271.60	10.276 ±.047	0.209 ±.005	10.694
5.30X265	265.00 ±1.20	5.30 ±0.13	275.60	10.433 ±.047	0.209 ±.005	10.851
5.30X268	268.00 ±1.20	5.30 ±0.13	278.60	10.551 ±.047	0.209 ±.005	10.969
5.30X272	272.00 ±1.20	5.30 ±0.13	282.60	10.709 ±.047	0.209 ±.005	11.127
5.30X276	276.00 ±1.20	5.30 ±0.13	286.60	10.866 ±.047	0.209 ±.005	11.284
5.30X280	280.00 ±1.20	5.30 ±0.13	290.60	11.024 ±.047	0.209 ±.005	11.442
5.30X283	283.00 ±1.20	5.30 ±0.13	293.60	11.142 ±.047	0.209 ±.005	11.560
5.30X286	286.00 ±1.20	5.30 ±0.13	296.60	11.260 ±.047	0.209 ±.005	11.678
5.30X290	290.00 ±1.20	5.30 ±0.13	300.60	11.417 ±.047	0.209 ±.005	11.835
5.30X295	295.00 ±1.20	5.30 ±0.13	305.60	11.614 ±.047	0.209 ±.005	12.032
5.30X300	300.00 ±1.20	5.30 ±0.13	310.60	11.811 ±.047	0.209 ±.005	12.229
5.30X303	303.00 ±1.20	5.30 ±0.13	313.60	11.929 ±.047	0.209 ±.005	12.347
5.30X307	307.00 ±1.20	5.30 ±0.13	317.60	12.087 ±.047	0.209 ±.005	12.505
5.30X311	311.00 ±1.20	5.30 ±0.13	321.60	12.244 ±.047	0.209 ±.005	12.662
5.30X315	315.00 ±1.20	5.30 ±0.13	325.60	12.402 ±.047	0.209 ±.005	12.820
5.30X320	320.00 ±1.20	5.30 ±0.13	330.60	12.598 ±.047	0.209 ±.005	13.016
5.30X325	325.00 ±1.20	5.30 ±0.13	335.60	12.795 ±.047	0.209 ±.005	13.213
5.30X330	330.00 ±1.20	5.30 ±0.13	340.60	12.992 ±.047	0.209 ±.005	13.410
5.30X335	335.00 ±1.20	5.30 ±0.13	345.60	13.189 ±.047	0.209 ±.005	13.607
5.30X340	340.00 ±1.20	5.30 ±0.13	350.60	13.386 ±.047	0.209 ±.005	13.804
5.30X345	345.00 ±1.20	5.30 ±0.13	355.60	13.583 ±.047	0.209 ±.005	14.001
5.30X350	350.00 ±1.20	5.30 ±0.13	360.60	13.780 ±.047	0.209 ±.005	14.197
5.30X355	355.00 ±1.20	5.30 ±0.13	365.60	13.976 ±.047	0.209 ±.005	14.394
5.30X360	360.00 ±1.20	5.30 ±0.13	370.60	14.173 ±.047	0.209 ±.005	14.591
5.30X365	365.00 ±1.20	5.30 ±0.13	375.60	14.370 ±.047	0.209 ±.005	14.788
5.30X370	370.00 ±1.20	5.30 ±0.13	380.60	14.567 ±.047	0.209 ±.005	14.985
5.30X375	375.00 ±1.20	5.30 ±0.13	385.60	14.764 ±.047	0.209 ±.005	15.182
5.30X379	379.00 ±1.20	5.30 ±0.13	389.60	14.921 ±.047	0.209 ±.005	15.339
5.30X383	383.00 ±1.20	5.30 ±0.13	393.60	15.079 ±.047	0.209 ±.005	15.497
5.30X387	387.00 ±1.20	5.30 ±0.13	397.60	15.236 ±.047	0.209 ±.005	15.654
5.30X391	391.00 ±1.20	5.30 ±0.13	401.60	15.394 ±.047	0.209 ±.005	15.812
5.30X395	395.00 ±1.20	5.30 ±0.13	405.60	15.551 ±.047	0.209 ±.005	15.969
5.30X400	400.00 ±1.20	5.30 ±0.13	410.60	15.748 ±.047	0.209 ±.005	16.166

7 mm cross-section

CS 7 mm · 110 sizes

NF T 47-501 7 mm cross-section size table
Code (CS×ID)	ID (mm)	CS (mm)	OD (mm)	ID (in)	CS (in)	OD (in)
7.00X109	109.00 ±0.50	7.00 ±0.15	123.00	4.291 ±.020	0.276 ±.006	4.843
7.00X112	112.00 ±0.50	7.00 ±0.15	126.00	4.409 ±.020	0.276 ±.006	4.961
7.00X115	115.00 ±0.50	7.00 ±0.15	129.00	4.528 ±.020	0.276 ±.006	5.080
7.00X118	118.00 ±0.50	7.00 ±0.15	132.00	4.646 ±.020	0.276 ±.006	5.198
7.00X122	122.00 ±0.70	7.00 ±0.15	136.00	4.803 ±.028	0.276 ±.006	5.355
7.00X125	125.00 ±0.70	7.00 ±0.15	139.00	4.921 ±.028	0.276 ±.006	5.473
7.00X128	128.00 ±0.70	7.00 ±0.15	142.00	5.039 ±.028	0.276 ±.006	5.591
7.00X132	132.00 ±0.70	7.00 ±0.15	146.00	5.197 ±.028	0.276 ±.006	5.749
7.00X136	136.00 ±0.70	7.00 ±0.15	150.00	5.354 ±.028	0.276 ±.006	5.906
7.00X140	140.00 ±0.70	7.00 ±0.15	154.00	5.512 ±.028	0.276 ±.006	6.064
7.00X145	145.00 ±0.70	7.00 ±0.15	159.00	5.709 ±.028	0.276 ±.006	6.261
7.00X150	150.00 ±0.70	7.00 ±0.15	164.00	5.905 ±.028	0.276 ±.006	6.457
7.00X155	155.00 ±0.70	7.00 ±0.15	169.00	6.102 ±.028	0.276 ±.006	6.654
7.00X160	160.00 ±0.70	7.00 ±0.15	174.00	6.299 ±.028	0.276 ±.006	6.851
7.00X165	165.00 ±0.70	7.00 ±0.15	179.00	6.496 ±.028	0.276 ±.006	7.048
7.00X170	170.00 ±0.70	7.00 ±0.15	184.00	6.693 ±.028	0.276 ±.006	7.245
7.00X172.5	172.50 ±0.70	7.00 ±0.15	186.50	6.791 ±.028	0.276 ±.006	7.343
7.00X175	175.00 ±0.70	7.00 ±0.15	189.00	6.890 ±.028	0.276 ±.006	7.442
7.00X177.5	177.50 ±0.70	7.00 ±0.15	191.50	6.988 ±.028	0.276 ±.006	7.540
7.00X180	180.00 ±0.70	7.00 ±0.15	194.00	7.087 ±.028	0.276 ±.006	7.639
7.00X182.5	182.50 ±0.90	7.00 ±0.15	196.50	7.185 ±.035	0.276 ±.006	7.737
7.00X185	185.00 ±0.90	7.00 ±0.15	199.00	7.284 ±.035	0.276 ±.006	7.835
7.00X185.7	185.70 ±0.90	7.00 ±0.15	199.70	7.311 ±.035	0.276 ±.006	7.863
7.00X190	190.00 ±0.90	7.00 ±0.15	204.00	7.480 ±.035	0.276 ±.006	8.032
7.00X195	195.00 ±0.90	7.00 ±0.15	209.00	7.677 ±.035	0.276 ±.006	8.229
7.00X200	200.00 ±0.90	7.00 ±0.15	214.00	7.874 ±.035	0.276 ±.006	8.426
7.00X203	203.00 ±0.90	7.00 ±0.15	217.00	7.992 ±.035	0.276 ±.006	8.544
7.00X206	206.00 ±0.90	7.00 ±0.15	220.00	8.110 ±.035	0.276 ±.006	8.662
7.00X212	212.00 ±0.90	7.00 ±0.15	226.00	8.347 ±.035	0.276 ±.006	8.899
7.00X218	218.00 ±0.90	7.00 ±0.15	232.00	8.583 ±.035	0.276 ±.006	9.135
7.00X224	224.00 ±0.90	7.00 ±0.15	238.00	8.819 ±.035	0.276 ±.006	9.371
7.00X230	230.00 ±0.90	7.00 ±0.15	244.00	9.055 ±.035	0.276 ±.006	9.607
7.00X236	236.00 ±0.90	7.00 ±0.15	250.00	9.291 ±.035	0.276 ±.006	9.843
7.00X239	239.00 ±0.90	7.00 ±0.15	253.00	9.409 ±.035	0.276 ±.006	9.961
7.00X243	243.00 ±0.90	7.00 ±0.15	257.00	9.567 ±.035	0.276 ±.006	10.119
7.00X250	250.00 ±0.90	7.00 ±0.15	264.00	9.842 ±.035	0.276 ±.006	10.394
7.00X254	254.00 ±1.20	7.00 ±0.15	268.00	10.000 ±.047	0.276 ±.006	10.552
7.00X258	258.00 ±1.20	7.00 ±0.15	272.00	10.158 ±.047	0.276 ±.006	10.710
7.00X261	261.00 ±1.20	7.00 ±0.15	275.00	10.276 ±.047	0.276 ±.006	10.828
7.00X265	265.00 ±1.20	7.00 ±0.15	279.00	10.433 ±.047	0.276 ±.006	10.985
7.00X268	268.00 ±1.20	7.00 ±0.15	282.00	10.551 ±.047	0.276 ±.006	11.103
7.00X272	272.00 ±1.20	7.00 ±0.15	286.00	10.709 ±.047	0.276 ±.006	11.261
7.00X276	276.00 ±1.20	7.00 ±0.15	290.00	10.866 ±.047	0.276 ±.006	11.418
7.00X280	280.00 ±1.20	7.00 ±0.15	294.00	11.024 ±.047	0.276 ±.006	11.576
7.00X283	283.00 ±1.20	7.00 ±0.15	297.00	11.142 ±.047	0.276 ±.006	11.694
7.00X286	286.00 ±1.20	7.00 ±0.15	300.00	11.260 ±.047	0.276 ±.006	11.812
7.00X290	290.00 ±1.20	7.00 ±0.15	304.00	11.417 ±.047	0.276 ±.006	11.969
7.00X295	295.00 ±1.20	7.00 ±0.15	309.00	11.614 ±.047	0.276 ±.006	12.166
7.00X300	300.00 ±1.20	7.00 ±0.15	314.00	11.811 ±.047	0.276 ±.006	12.363
7.00X303	303.00 ±1.20	7.00 ±0.15	317.00	11.929 ±.047	0.276 ±.006	12.481
7.00X307	307.00 ±1.20	7.00 ±0.15	321.00	12.087 ±.047	0.276 ±.006	12.639
7.00X311	311.00 ±1.20	7.00 ±0.15	325.00	12.244 ±.047	0.276 ±.006	12.796
7.00X315	315.00 ±1.20	7.00 ±0.15	329.00	12.402 ±.047	0.276 ±.006	12.954
7.00X320	320.00 ±1.20	7.00 ±0.15	334.00	12.598 ±.047	0.276 ±.006	13.150
7.00X325	325.00 ±1.20	7.00 ±0.15	339.00	12.795 ±.047	0.276 ±.006	13.347
7.00X330	330.00 ±1.20	7.00 ±0.15	344.00	12.992 ±.047	0.276 ±.006	13.544
7.00X335	335.00 ±1.20	7.00 ±0.15	349.00	13.189 ±.047	0.276 ±.006	13.741
7.00X340	340.00 ±1.20	7.00 ±0.15	354.00	13.386 ±.047	0.276 ±.006	13.938
7.00X345	345.00 ±1.20	7.00 ±0.15	359.00	13.583 ±.047	0.276 ±.006	14.135
7.00X350	350.00 ±1.20	7.00 ±0.15	364.00	13.780 ±.047	0.276 ±.006	14.332
7.00X355	355.00 ±1.20	7.00 ±0.15	369.00	13.976 ±.047	0.276 ±.006	14.528
7.00X360	360.00 ±1.20	7.00 ±0.15	374.00	14.173 ±.047	0.276 ±.006	14.725
7.00X365	365.00 ±1.20	7.00 ±0.15	379.00	14.370 ±.047	0.276 ±.006	14.922
7.00X370	370.00 ±1.20	7.00 ±0.15	384.00	14.567 ±.047	0.276 ±.006	15.119
7.00X375	375.00 ±1.20	7.00 ±0.15	389.00	14.764 ±.047	0.276 ±.006	15.316
7.00X379	379.00 ±1.20	7.00 ±0.15	393.00	14.921 ±.047	0.276 ±.006	15.473
7.00X383	383.00 ±1.20	7.00 ±0.15	397.00	15.079 ±.047	0.276 ±.006	15.631
7.00X387	387.00 ±1.20	7.00 ±0.15	401.00	15.236 ±.047	0.276 ±.006	15.788
7.00X391	391.00 ±1.20	7.00 ±0.15	405.00	15.394 ±.047	0.276 ±.006	15.946
7.00X395	395.00 ±1.20	7.00 ±0.15	409.00	15.551 ±.047	0.276 ±.006	16.103
7.00X400	400.00 ±1.20	7.00 ±0.15	414.00	15.748 ±.047	0.276 ±.006	16.300
7.00X406	406.00 ±1.20	7.00 ±0.15	420.00	15.984 ±.047	0.276 ±.006	16.536
7.00X412	412.00 ±1.20	7.00 ±0.15	426.00	16.221 ±.047	0.276 ±.006	16.773
7.00X418	418.00 ±1.20	7.00 ±0.15	432.00	16.457 ±.047	0.276 ±.006	17.009
7.00X425	425.00 ±1.20	7.00 ±0.15	439.00	16.732 ±.047	0.276 ±.006	17.284
7.00X429	429.00 ±1.20	7.00 ±0.15	443.00	16.890 ±.047	0.276 ±.006	17.442
7.00X433	433.00 ±1.20	7.00 ±0.15	447.00	17.047 ±.047	0.276 ±.006	17.599
7.00X437	437.00 ±1.20	7.00 ±0.15	451.00	17.205 ±.047	0.276 ±.006	17.757
7.00X443	443.00 ±1.20	7.00 ±0.15	457.00	17.441 ±.047	0.276 ±.006	17.993
7.00X450	450.00 ±1.20	7.00 ±0.15	464.00	17.716 ±.047	0.276 ±.006	18.268
7.00X456	456.00 ±1.20	7.00 ±0.15	470.00	17.953 ±.047	0.276 ±.006	18.505
7.00X462	462.00 ±1.20	7.00 ±0.15	476.00	18.189 ±.047	0.276 ±.006	18.741
7.00X466	466.00 ±1.20	7.00 ±0.15	480.00	18.346 ±.047	0.276 ±.006	18.898
7.00X470	470.00 ±1.20	7.00 ±0.15	484.00	18.504 ±.047	0.276 ±.006	19.056
7.00X475	475.00 ±1.20	7.00 ±0.15	489.00	18.701 ±.047	0.276 ±.006	19.253
7.00X479	479.00 ±1.20	7.00 ±0.15	493.00	18.858 ±.047	0.276 ±.006	19.410
7.00X483	483.00 ±1.20	7.00 ±0.15	497.00	19.016 ±.047	0.276 ±.006	19.568
7.00X487	487.00 ±1.20	7.00 ±0.15	501.00	19.173 ±.047	0.276 ±.006	19.725
7.00X493	493.00 ±1.20	7.00 ±0.15	507.00	19.409 ±.047	0.276 ±.006	19.961
7.00X500	500.00 ±1.20	7.00 ±0.15	514.00	19.685 ±.047	0.276 ±.006	20.237
7.00X508	508.00 ±1.20	7.00 ±0.15	522.00	20.000 ±.047	0.276 ±.006	20.552
7.00X515	515.00 ±1.20	7.00 ±0.15	529.00	20.276 ±.047	0.276 ±.006	20.828
7.00X523	523.00 ±1.20	7.00 ±0.15	537.00	20.591 ±.047	0.276 ±.006	21.143
7.00X530	530.00 ±1.20	7.00 ±0.15	544.00	20.866 ±.047	0.276 ±.006	21.418
7.00X538	538.00 ±1.20	7.00 ±0.15	552.00	21.181 ±.047	0.276 ±.006	21.733
7.00X545	545.00 ±1.20	7.00 ±0.15	559.00	21.457 ±.047	0.276 ±.006	22.009
7.00X553	553.00 ±1.20	7.00 ±0.15	567.00	21.772 ±.047	0.276 ±.006	22.324
7.00X560	560.00 ±1.20	7.00 ±0.15	574.00	22.047 ±.047	0.276 ±.006	22.599
7.00X570	570.00 ±1.20	7.00 ±0.15	584.00	22.441 ±.047	0.276 ±.006	22.993
7.00X580	580.00 ±1.20	7.00 ±0.15	594.00	22.835 ±.047	0.276 ±.006	23.387
7.00X590	590.00 ±1.20	7.00 ±0.15	604.00	23.228 ±.047	0.276 ±.006	23.780
7.00X600	600.00 ±1.20	7.00 ±0.15	614.00	23.622 ±.047	0.276 ±.006	24.174
7.00X608	608.00 ±1.20	7.00 ±0.15	622.00	23.937 ±.047	0.276 ±.006	24.489
7.00X615	615.00 ±1.20	7.00 ±0.15	629.00	24.213 ±.047	0.276 ±.006	24.765
7.00X623	623.00 ±1.20	7.00 ±0.15	637.00	24.528 ±.047	0.276 ±.006	25.080
7.00X630	630.00 ±1.20	7.00 ±0.15	644.00	24.803 ±.047	0.276 ±.006	25.355
7.00X640	640.00 ±1.20	7.00 ±0.15	654.00	25.197 ±.047	0.276 ±.006	25.749
7.00X650	650.00 ±1.20	7.00 ±0.15	664.00	25.591 ±.047	0.276 ±.006	26.143
7.00X660	660.00 ±1.20	7.00 ±0.15	674.00	25.984 ±.047	0.276 ±.006	26.536
7.00X670	670.00 ±1.20	7.00 ±0.15	684.00	26.378 ±.047	0.276 ±.006	26.930

Other size charts

Need	Chart
AS568 dash (0xx-4xx)	AS568 O-Ring Size Chart
Metric / ISO 3601	Metric O-Ring Size Chart
JIS S/P/G/V	JIS B 2401 Size Chart
ORB / 900-series boss	ORB Boss Size Chart
Back-up rings	Backup Ring Size Chart
DIN 3771	DIN 3771 Size Chart
Generic Metric	Generic Metric Size Chart
BS 4518	BS 4518 Size Chart
BS 1806	BS 1806 Size Chart
NF T 47-501	NF T 47-501 Size Chart
SMS 1586	SMS 1586 Size Chart
X-Ring	X-Ring Size Chart
Square Ring	Square Ring Size Chart
Parker 500	Parker 500 Size Chart
ISO 6149 ports	ISO 6149 Size Chart
Search across standards	Master O-Ring Size Chart

History and explanation of the NF T 47-501 standard

What NF T 47-501 is

French industrial and automotive drawings often cite NF T / AFNOR O-Ring sizing. In day-to-day buying it behaves like other European metric charts: find the cross-section, then the ID.

Relation to ISO 3601

NF metric practice sits close to international ISO 3601 millimeter sizing. When a print lists both, dimensions should agree; when only NF codes appear (for example lettered size marks in some catalogs), use this table and confirm ID/CS in mm.

Using this chart

Identify CS and ID from the print or measurement.
Find the row in the matching CS group.
Order by store CS×ID and the required compound.

NF T 47-501 O-Ring Size Chart

1.8 mm cross-section

2.65 mm cross-section

3.55 mm cross-section

5.3 mm cross-section

7 mm cross-section

Other size charts

History and explanation of the NF T 47-501 standard

What NF T 47-501 is

Relation to ISO 3601

Using this chart

Handbook

The O-Ring Store

Get In Touch

1.8 mm cross-section

2.65 mm cross-section

3.55 mm cross-section

5.3 mm cross-section

7 mm cross-section

Other size charts

Related

History and explanation of the NF T 47-501 standard

What NF T 47-501 is

Relation to ISO 3601

Using this chart

Handbook

The O-Ring Store

Get In Touch