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How Snap / Retaining Ring Dimensions are Measured?

How Snap / Retaining Ring Dimensions are Measured?

Posted by BMI Karts

External Retaining Ring Dimensions

Use the chart below to compare shaft diameter, retaining ring thickness, free diameter, and other ring dimensions.

External retaining ring dimensions diagram
SHAFT EXTERNAL RETAINING RING DIMENSIONS
Diameter S Thickness Free Diameter C C1 L (max) b ~ h (min)
Fraction inch Decimal inch mm t inch Tol. inch D inch Tol. inch
1/8 .125 – .010 ±.001 .112 +.002 -.004 .222 .214 .048 .018 .024
5/32 .156 – .010 .142 .270 .260 .056 .026 .024
3/16 .188 – .015 ±.002 .168 .298 .286 .052 .025 .023
– .197 5 .015 .179 .319 .307 .058 .026 .024
7/32 .219 – .015 .196 +.002 -.005 .338 .324 .058 .028 .024
15/64 .236 – .015 .215 .355 .341 .058 .030 .024
1/4 .250 – .025 .225 .450 .430 .083 .035 .039
– .276 7 .025 .250 .480 .460 .084 .035 .039
9/32 .281 – .025 .256 .490 .470 .083 .038 .039
5/16 .312 – .025 .281 .540 .520 .090 .040 .039
11/32 .344 – .025 .309 .570 .550 .090 .042 .039
– .354 9 .025 .320 .590 .570 .090 .046 .039
3/8 .375 – .025 .338 .610 .590 .091 .050 .039
– .394 10 .025 .354 .620 .600 .090 .052 .039
13/32 .406 – .025 .366 .630 .610 .090 .054 .039
7/16 .438 – .025 .395 .660 .640 .091 .055 .039
15/32 .469 – .025 .428 .680 .660 .091 .060 .039
1/2 .500 – .035 .461 .770 .740 .111 .065 .045
– .551 14 .035 .509 +.005 -.010 .810 .780 .111 .053 .045
9/16 .562 – .035 .521 .820 .790 .111 .072 .045
19/32 .594 – .035 .550 .860 .830 .112 .076 .045
5/8 .625 – .035 .579 .900 .870 .113 .080 .045
– .669 17 .035 .621 .930 .890 .113 .082 .045
43/64 .672 – .035 .621 .930 .890 .113 .082 .045
11/16 .688 – .042 .635 1.010 .970 .140 .084 .050
3/4 .750 – .042 .693 1.090 1.050 .140 .092 .050
25/32 .781 – .042 .722 1.120 1.080 .140 .094 .050
13/16 .812 – .042 .751 1.150 1.100 .140 .096 .050
7/8 .875 – .042 .810 1.210 1.160 .141 .104 .050
15/16 .938 – .042 .867 1.340 1.290 .170 .110 .076
63/64 .984 25 .042 .910 1.390 1.340 .171 .114 .076
1 1.000 – .042 .925 1.410 1.350 .171 .116 .076
– 1.023 26 .042 .946 1.430 1.370 .172 .118 .076
1 1/16 1.062 – .050 .982 +.010 -.015 1.500 1.440 .185 .122 .076
1 1/8 1.125 – .050 1.041 1.550 1.490 .186 .128 .076
1 3/16 1.187 – .050 1.098 1.610 1.540 .186 .132 .076
1 1/4 1.250 – .050 1.156 1.690 1.620 .187 .140 .076
1 5/16 1.312 – .050 1.214 1.750 1.670 .187 .146 .076
1 3/8 1.375 – .050 1.272 1.800 1.720 .188 .152 .076
1 7/16 1.438 – .050 1.333 1.870 1.790 .188 .160 .076
1 1/2 1.500 – .050 1.387 1.990 1.900 .210 .168 .118
1 9/16 1.562 – .062 ±.003 1.446 +.013 -.020 2.100 2.010 .189 .180 .123
1 5/8 1.625 – .062 1.503 2.170 2.080 .239 .180 .123
1 11/16 1.688 – .062 1.560 2.240 2.150 .205 .197 .123
1 3/4 1.750 – .062 1.618 2.310 2.210 .205 .197 .123
– 1.772 45 .062 1.637 2.330 2.230 .205 .197 .123
1 13/16 1.812 – .062 1.675 2.380 2.280 .205 .197 .123
1 7/8 1.875 – .062 1.735 2.440 2.340 .205 .197 .123
– 1.968 50 .062 1.819 2.540 2.430 .205 .197 .123
2 2.000 – .062 1.850 2.550 2.440 .232 .224 .123
2 1/16 2.062 – .078 1.906 +.015 -.025 2.680 2.570 .225 .217 .123
2 1/8 2.125 – .078 1.964 2.750 2.630 .236 .228 .123
2 5/32 2.156 – .078 1.993 2.780 2.660 .225 .217 .123
2 1/4 2.250 – .078 2.081 2.870 2.740 .272 .220 .123
2 5/16 2.312 – .078 2.139 2.940 2.810 .272 .222 .123
2 3/8 2.375 – .078 2.197 3.010 2.880 .236 .228 .123
2 7/16 2.438 – .078 2.255 3.070 2.940 .236 .228 .123
2 1/2 2.500 – .078 2.313 3.120 2.980 .236 .228 .123
– 2.559 65 .078 2.377 +.020 -.030 3.180 3.040 .258 .250 .123
2 5/8 2.625 – .078 2.428 3.250 3.110 .236 .228 .123
2 11/16 2.688 – .078 2.485 3.320 3.180 .273 .246 .123
2 3/4 2.750 – .093 2.543 3.450 3.310 .284 .275 .123
2 7/8 2.875 – .093 2.659 3.570 3.420 .268 .260 .123
2 15/16 2.938 – .093 2.717 3.640 3.490 .268 .260 .123
3 3.000 – .093 2.775 3.690 3.530 .268 .260 .123
3 1/16 3.062 – .093 2.832 3.740 3.580 .268 .260 .123
3 1/8 3.125 – .093 2.892 3.820 3.660 .305 .272 .123
3 5/32 3.156 – .093 2.920 3.850 3.680 .284 .276 .123
3 1/4 3.250 – .093 3.006 3.950 3.780 .284 .276 .123
3 11/32 3.346 85 .093 3.092 4.040 3.870 .284 .276 .123
3 7/16 3.438 – .093 3.179 4.140 3.960 .284 .276 .123
3 1/2 3.500 – .109 3.237 4.250 4.070 .320 .285 .123
– 3.543 90 .109 3.277 4.290 4.110 .320 .288 .123
3 5/8 3.625 – .109 3.352 4.370 4.180 .323 .315 .123
3 11/16 3.688 – .109 3.410 4.430 4.240 .335 .302 .123
3 3/4 3.750 – .109 3.468 4.500 4.310 .337 .310 .123
3 7/8 3.875 – .109 3.584 4.600 4.400 .335 .318 .123
3 15/16 3.938 100 .109 3.642 4.700 4.500 .323 .318 .123
4 4.000 – .109 3.700 4.780 4.580 .352 .344 .123
4 1/4 4.250 – .109 3.989 5.090 4.910 .323 .318 .123
4 3/8 4.375 – .109 4.106 5.220 5.040 .323 .318 .123
4 1/2 4.500 – .109 4.223 5.370 5.180 .323 .285 .123
4 3/4 4.750 – .109 4.458 5.670 5.470 .352 .303 .123
5 5.000 127 .109 4.692 5.960 5.750 .352 .344 .151
5 1/4 5.250 – .125 ±.004 4.927 +.020 -.040 6.270 6.050 .457 .372 .151
5 1/2 5.500 – .125 5.162 6.570 6.340 .457 .390 .151
5 3/4 5.750 – .125 5.396 6.860 6.620 .457 .408 .151
6 6.000 – .125 5.631 7.160 6.910 .457 .381 .151
6 1/4 6.250 – .156 ±.005 5.866 +.020 -.030 7.460 7.200 .508 .396 .151
6 1/2 6.500 – .156 6.100 7.870 7.600 .508 .438 .151
6 3/4 6.750 – .156 6.335 8.060 7.780 .508 .458 .182
7 7.000 – .156 6.570 8.150 8.070 .508 .460 .182
7 1/2 7.500 – .187 7.009 +.020 -.030 8.960 8.640 .632 .507 .182
8 8.000 – .187 7.478 9.600 9.260 .632 .540 .182
8 1/2 8.500 – .187 7.947 10.100 9.740 .632 .573 .182
9 9.000 – .187 8.415 10.600 10.220 .632 .609 .182
9 1/2 9.500 – .187 8.885 11.100 10.700 .632 .625 .182
10 10.000 254 .187 9.355 11.600 11.200 .632 .625 .182

Dimensions are shown as provided in the original chart. Scroll horizontally on smaller screens to view all columns.

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