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 TM 55-1905-223-24-18-2
Table D-1. Capscrew Markings and Torque Values - CONT
Capscrew
SAE GRADE #5
OR
SAE GRADE #6 or #7
SAE GRADE #8
Head
Markings
Table D-2. Pipe Plug Torque Values
Size
In Cast Iron or
Thread
Actual
Thread O.D.
In Aluminum Components
Steel Components
Torque
Torque
in
mm
(in)
N,m
(ft-lb.)
N'm
(ft-lb.)
1/16
8.1
(0.32)
5
(45 in-lb.)
15
(10)
1/8
10.4
(0.41)
15
(10)
20
(15)
1/4
13.7
(0.54)
20
(15)
25
(20)
3/8
17.3
(0.68)
25
(20)
35
(25)
1/2
21.6
(0.85)
35
(25)
55'
(40)
3/4
26.7
(1.05)
45
(35)
75
(55)
1
33.5
(1.32)
60
(45)
95
(70)
1-1/4
42.2
(1.66)
75
(55)
115
(85)
1-1/2
48.3
(1.90)
85
(65)
135
(100)
Table D-3. Metric Bolt Torque Values
Cast Iron or Steel
Thread for general purposes
Head Mark 4
Head Mark 7
Torque
Torque
(size x pitch (mm))
ft-lb.
(N-m)
ft-lb.
(N-m)
6 x 1.0
2.2 to 2.9
(3.0 to 3.9)
3.6 to 5.8
(4.9 to 7.8)
8 x 1.25
5.8 to 8.7
(7.9 to 12)
9.4 to 14
(13 to 19)
10 x 1.25
12 to 17
(16 to 23)
20 to 29
(27 to 39)
12 x 1.25
21 to 32
(29 to 43)
35 to 53
(47 to 72)
14 x 1.5
35 to 52
(48 to 70)
57 to 85
(77 to 110)
16 x 1.5
51 to 77
(67 to 100)
90 to 120
(130 to 160)
18 x 1.5
74 to 110
(100 to 150)
130 to 176
(180 to 230)
20 x 1.5
110 to 140
(150 to 190)
190 to 240
(160 to 320)
22 x 1.5
150 to 190
(200 to 260)
250 to 320
(340 to 430)
24 x 1.5
190 to 240
(260 to 320)
310 to 410
(420 to 550)
D-2
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