|
Fastener
|
Type
|
Minimum
Tensile
Strength
|
Material
|
PRODUCTION TORQUE GUIDE
|
|
Body size of Outside Diameter
|
|
2
|
3
|
4
|
5
|
6
|
8
|
10
|
1/4
|
5/16
|
3/8
|
7/16
|
1/2
|
9/16
|
5/8
|
3/4
|
7/8
|
1
|
1-1/8
|
1-1/4
|
1-3/8
|
1-1/2
|
|
S.A.E 2 Steel
|
74000 P.S.I
|
Low Carbon
|
|
|
|
|
|
|
|
6
|
12
|
20
|
32
|
47
|
69
|
96
|
155
|
206
|
310
|
480
|
675
|
900
|
1100
|
|
S.A.E. 5 Steel
|
120000 P.S.I
|
Medium Carbon Heat Treat
|
|
|
|
|
|
|
|
10
|
19
|
33
|
54
|
78
|
114
|
154
|
257
|
382
|
587
|
794
|
1105
|
1500
|
1775
|
|
S.A.E. 7 Steel
|
133000 P.S.I.
|
Medium Carbon Alloy
|
|
|
|
|
|
|
|
13
|
25
|
44
|
71
|
110
|
154
|
215
|
360
|
570
|
840
|
1325
|
1825
|
2500
|
3000
|
|
S.A.E. 8 Steel
|
150000 P.S.I.
|
Medium Carbon Alloy
|
|
|
|
|
|
|
|
14
|
29
|
47
|
78
|
119
|
169
|
230
|
380
|
600
|
900
|
1430
|
1975
|
2650
|
3200
|
|
Socket Head
Cap Screw
|
160000 P.S.I.
|
High Carbon Quenched Tempered
|
|
|
|
|
|
|
|
16
|
33
|
54
|
84
|
125
|
180
|
250
|
400
|
640
|
970
|
1520
|
2850
|
2130
|
3450
|
|
Socket Set
Screw
|
212000 P.S.I.
|
High Carbon Quenched Tempered
|
|
|
|
|
9*
|
16*
|
30*
|
70*
|
140*
|
18
|
29
|
43
|
63
|
100
|
146
|
|
|
|
|
|
|
|
Machine Screw
Stainless
|
|
18-8
|
2.6*
|
4*
|
5.5*
|
8*
|
10*
|
20*
|
23*
|
75*
|
132*
|
20
|
31
|
43
|
58
|
95
|
130
|
194
|
260
|
400
|
500
|
|
725
|
|
Machine Screw
Stainless
|
|
316
|
2.7*
|
4*
|
5.7*
|
8*
|
10*
|
22*
|
25*
|
80*
|
140*
|
22
|
34
|
46
|
60
|
100
|
135
|
210
|
280
|
425
|
515
|
|
750
|
|
Machine Screw
Yellow Brass
|
60000 P.S.I.
|
CU 63 ZN 37
|
2*
|
3.3*
|
4.4*
|
6.4*
|
8*
|
16*
|
20*
|
65*
|
110*
|
17
|
27
|
37
|
49
|
78
|
104
|
160
|
215
|
325
|
400
|
|
595
|
|
Silicone Bronze
Type "B"
|
70000 P.S.I.
|
CU 96 ZNI-5 Min.
|
2.3*
|
3.7*
|
4.9*
|
7.2*
|
10*
|
19*
|
22*
|
70*
|
125*
|
20
|
30
|
41
|
53
|
88
|
117
|
180
|
250
|
365
|
450
|
|
655
|
|
|
Machine Screw
Aluminum
|
55000 P.S.I.
|
CU 3.8-4.9 1.2-1.8 MN .3-.9
|
1.4*
|
2.1*
|
2.9*
|
4.3*
|
5.4*
|
12*
|
15*
|
46*
|
82*
|
13
|
20
|
27
|
36
|
62
|
83
|
128
|
170
|
255
|
315
|
|
460
|
|
Machine Screw
Monel
|
82000 P.S.I.
|
NI 67 CU 30 FE 1.4
|
2.5*
|
4*
|
5.5*
|
8*
|
11*
|
21*
|
27*
|
87*
|
155*
|
23
|
36
|
50
|
67
|
115
|
155
|
235
|
315
|
475
|
585
|
|
850
|
|
Sems Heat
Treated Steel
|
120000 P.S.I.
|
1018 1022
|
4*
|
5*
|
7*
|
11*
|
15*
|
27*
|
37*
|
90*
|
200*
|
300*
|
|
|
|
|
|
|
|
|
|
|
|
|
Studs
|
Use SAE 2.5 and 8 values when grade is known, with nut of
sufficient strength.
|
All figures are POUND FEET except those
marked with an
ASTERISK( * ) WHICH ARE pound inches.
These values are for lubricated fasteners.
|
|
Tapping Screw
|
Set up joint as it will be in production use 70% of over-torque
failure as production specifications.
|