MIL-DTL-21248C
FIGURE 3. Type I, Class 3 Retaining Rings.
TABLE III. Supplementary Dimensions, Type I, Class 3 Retaining Rings.
V 1/
K
Z
P
C 1/
Nominal Ring Size
(Free gap)
(Inch)
(Inch)
(Inch)
(Inch)
(Inch)
Inch
mm
Basic
Tol
Basic
Tol
Basic
Tol
Max
Max
.750
19.0
.229
.281
.042
.020
.008
.812
20.6
.249
.312
.042
.022
.010
.875
22.2
.267
+.040
.343
±.062
.042
.023
.010
.938
23.8
.285
-.025
.359
.042
.025
.010
1.000
25.4
.309
.375
.042
.027
.010
1.063
27.0
.327
.406
.050
+.010
.028
.010
1.125
28.6
.347
.437
.050
-.002
.030
.012
1.888
30.2
.367
.453
.050
.031
.012
1.250
31.7
.387
.484
.050
.035
.012
+.060
±.093
1.312
33.3
.407
.500
.050
.036
.012
-.045
1.375
34.9
.428
.531
.050
.037
.012
1.438
36.5
.443
.562
.076
.039
.012
1.500
38.1
.463
.593
.076
.040
.012
1.562
39.7
.478
.593
.076
.042
.012
1.625
41.3
.498
.625
.076
.045
.012
1.688
42.9
.517
.656
.076
.046
.012
+.075
±.125
1.750
44.4
.548
.687
.076
.047
.012
-.055
1.875
47.6
.584
.718
.076
.050
.012
+.015
2.000
50.8
.615
.750
.076
.055
.012
-.002
2.062
52.4
.637
.781
.094
.056
.015
+.090
2.125
54.0
.658
.812
.094
.057
.015
-.060
±.156
2.375
60.3
.741
.890
.094
.065
.015
2.438
61.9
.760
.921
.094
.066
.015
2.500
63.5
.778
.968
.094
.067
.015
2.625
66.7
.815
1.031
.109
.070
.015
+.105
-.075
12
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