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MIL-DTL-21248 Ring, Retaining \(Tapered And Reduced Section Type\)This specification covers the procurement requirements for tapered and reduced section type retaining rings of rectangular and beveled cross-section.

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MIL-DTL-21248C
TABLE III. (Continued)
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
2.750
69.8
.851
1.062
.109
.075
.015
2.812
71.4
.884
+.105
1.093
±.156
.109
.076
.015
2.834
72.0
.884
.075
1.093
.109
.076
.015
3.000
76.2
.936
1.171
.109
+.015
.082
.015
3.156
80.2
.984
1.187
.125
-.002
.086
.015
3.346
85.0
1.049
1.312
.125
.090
.015
+.110
3.500
88.9
1.100
1.375
.125
.095
.020
-.080
±187
3.562
90.5
1.121
1.406
.125
.097
.020
1/ See Table XI and Figure 12.
3.5.2.1.4 Type I, Class 4 retaining rings. Type I, Class 4 retaining rings shall be similar to
Figure 4 and shall conform to the hardness requirements and the dimensions of MS16626 and the
supplementary dimensions of Table IV.
FIGURE 4. Type I, Class 4 Retaining Rings.
13



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