MIL-DTL-20625B
ASTM INTERNATIONAL
ASTM A304
-
Standard Specification for Carbon and Alloy Steel Bars Subject to End-
Quench Hardenability Requirements
ASTM A582/A582M
-
Standard Specification for Free-Machining Stainless Steel Bars
ASTM B21/B21M
-
Standard Specification for Naval Brass Rod, Bar, and Shapes
(Copies of these documents are available from ASTM International, 100 Barr Harbor Dr., P.O. Box C700, West
Conshohocken, PA 19428-2959 or online at www.astm.org.)
2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between
the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this
document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained.
3. REQUIREMENTS
3.1 Material. The materials for parts shall be in accordance with table I, as applicable. Materials for parts not
covered by table I shall be of high grade commercial standard material which, when installed in a mechanical valve
remote control system and operated intermittently, will transmit the required torques specified in table II (see 4.1.2).
TABLE I. Materials.
Hubs
Block
Pins
Class A
ASTM A304
ASTM A304
ASTM A304
Class B
ASTM B21/B21M
ASTM B21/B21M
QQ-N-281
Class C
ASTM A582/A582M
ASTM A582/A582M
ASTM A582/A582M
TABLE II. Transmitted torque (foot-pounds).
Joint Size
150 Degrees
180 Degrees
/8
3
2.5
2
½
5.6
7
/8
5
15
12
¾
14
-17.5
/8
7
16
20
1
32
40
1⅛
41.6
52
11/4
56
70
1½
-68
105
13/4
80
125
2
130
180
21/2
200
250
3
300
375
4
400
500
2
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