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The to rque values sho wn sho uld be used as a general guideline when specific to rque values are no t given.
Grade
SAE grade 5
ft./lbs
1/4
9
5/16
18
3/8
31
7/16
50
1/2
75
9/16
110
5/8
150
3/4
250
7/8
378
1
583
1 1/8
782
** Grade 5 - Minimum commercial quality (Lower quality not recommended)
Grade
Grade 8.8
ft./lbs
M4
1.5
M5
3
M6
5.2
M7
8.2
M8
13.5
M10
24
M12
43.5
M14
70.5
M16
108
M18
142
M20
195
M22
276
M24
353
M27
530
TECHNICAL DATA
TORQUE SPECIFICATIONS
HEX HEAD CAP SCREWS
U.S. Standard Hardw are
SAE grade 8
Nm
ft./lbs
12
13
24
28
42
46
68
75
102
115
150
165
203
225
339
370
513
591
790
893
1060
1410
Metric Standard Hardw are
Grade 10.9
8 .8
Nm
ft./lbs
2
2.2
4
4.5
7
7.5
11
12
18
18.8
32
35.2
58
62.2
94
100
144
147
190
202
260
275
368
390
470
498
707
474
Flangelock Screw
w/ Flangelock Nut
Nm
ft./lbs
18
38
24
62
40
108
156
224
305
502
801
1211
1912
Grade 12.9
10.9
Nm
ft./lbs
3
2.7
6
5.2
10
8.2
16
15
25
21.8
47
43.5
83
75
133
119
196
176
269
242
366
330
520
471
664
596
996
904
Nm
33
54
12 .9
Nm
3.6
7
11
2
29
58
100
159
235
323
440
628
794
1205
-51
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