MIL-DTL-21248C
TABLE IV. Supplementary Dimensions, Type I, Class 4 Retaining Rings.
R
Z
P dia
C 1/
V 1/
Nominal Ring Size (Free gap)
(Inch)
(Inch)
(Inch)
(Inch)
(Inch)
Inch
mm
Max
Basic
Tol
Basic
Tol
Max
Max
.500
12.7
.050
.187
.042
.0130
.008
.562
14.3
.050
.187
.042
.0140
.008
.594
15.1
.050
.218
±.031
.042
.0145
.008
.625
15.9
.050
.218
.042
.0145
.008
.672
17.1
.050
.234
.042
.0155
.008
.688
17.5
.060
.234
.042
+.010
.0160
.010
.750
19.0
.060
.250
.042
-.002
.0175
.010
.781
19.8
.060
.250
.042
.0180
.010
.812
20.6
.060
.281
.050
.0180
.010
.875
22.2
.060
.312
.050
.0210
.010
±.062
.938
23.8
.060
.343
.050
.0210
.010
.984
25.0
.060
.375
.050
.0225
.010
1.000
25.4
.060
.375
.050
.0225
.010
1.062
27.0
.080
.375
.078
.0235
.012
1.125
28.6
.080
.406
.078
.0250
.012
1.188
30.2
.080
.437
.078
.0260
.012
1.250
31.7
.080
.468
.078
.0275
.012
±.093
1.312
33.3
.080
.468
.078
.0310
.012
1.375
34.9
.080
.500
.078
.0325
.012
1.438
36.5
.080
.531
.078
.0340
.012
1.500
38.1
.080
.562
.078
.0350
.012
1.562
39.7
.102
.593
.078
.0365
.012
1.750
44.4
.102
.687
.078
.0410
.012
+.015
1.772
45.0
.102
.687
.078
.0410
.012
-.002
1.812
46.0
.102
.687
.078
.0415
.012
±.125
1.969
50.0
.102
.750
.078
.0450
.015
2.000
50.8
.102
.750
.078
.0450
.015
2.125
54.0
.123
.812
.120
.0495
.015
2.156
54.8
.123
.812
.120
.0495
.015
±.156
2.500
63.5
.123
.812
.120
.0575
.015
2.875
73.0
.153
1.125
.120
.0660
.015
3.156
80.1
.153
1.187
.120
.0730
.015
3.500
88.8
.170
1.375
.125
.0800
.020
3.938
100.0
.170
1.562
.125
.0905
.020
±.187
1/ See Table XI and Figure 12.
14
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