INTRODUCTION
Torque - Minimum tightening torques for normal assembly
SP.240F
SP.275F
SP.333F
SP.365F
Decimal hardware
Grade 5 bolts, nuts and studs
Size
Nm
lb in/lb ft
1/4 in
12 - 15 Nm
108 - 132 lb in
5/16 in
23 - 28 Nm
204 - 252 lb in
3/8 in
48 - 57 Nm
420 - 504 lb in
7/16 in
73 - 87 Nm
54 - 64 lb ft
1/2 in
109 - 130 Nm
80 - 96 lb ft
9/16 in
149 - 179 Nm
110 - 132 lb ft
5/8 in
203 - 244 Nm
150 - 180 lb ft
3/4 in
366 - 439 Nm
270 - 324 lb ft
7/8 in
542 - 651 Nm
400 - 480 lb ft
1 in
787 - 944 Nm
580 - 696 lb ft
1-1/8 in
1085 - 1193 Nm
800 - 880 lb ft
1-1/4 in
1519 - 1681 Nm
1120 - 1240 lb ft
1-3/8 in
1980 - 2278 Nm
1460 - 1680 lb ft
1-1/2 in
2631 - 2983 Nm
1940 - 2200 lb ft
Grade 8 bolts, nuts and studs
Size
Nm
lb in/lb ft
1/4 in
16 - 20 Nm
144 - 180 lb in
5/16 in
33 - 39 Nm
288 - 348 lb in
3/8 in
61 - 73 Nm
540 - 648 lb in
7/16 in
95 - 114 Nm
70 - 84 lb ft
1/2 in
149 - 179 Nm
110 - 132 lb ft
9/16 in
217 - 260 Nm
160 - 192 lb ft
5/8 in
298 - 358 Nm
220 - 264 lb ft
3/4 in
515 - 618 Nm
380 - 456 lb ft
7/8 in
814 - 976 Nm
600 - 720 lb ft
1 in
1220 - 1465 Nm
900 - 1080 lb ft
1-1/8 in
1736 - 1953 Nm
1280 - 1440 lb ft
1-1/4 in
2468 - 2712 Nm
1820 - 2000 lb ft
1-3/8 in
3227 - 3688 Nm
2380 - 2720 lb ft
1-1/2 in
4285 - 4827 Nm
3160 - 3560 lb ft
NOTE:
Use thick nuts with Grade 8 bolts.
Metric hardware
Grade 8.8 bolts, nuts and studs
Size
Nm
lb in/lb ft
4 mm
3 - 4 Nm
24 - 36 lb in
5 mm
7 - 8 Nm
60 - 72 lb in
6 mm
11 - 12 Nm
96 - 108 lb in
8 mm
26 - 31 Nm
228 - 276 lb in
10 mm
52 - 61 Nm
456 - 540 lb in
12 mm
90 - 107 Nm
66 - 79 lb ft
14 mm
144 - 172 Nm
106 - 127 lb ft
16 mm
217 - 271 Nm
160 - 200 lb ft
20 mm
434 - 515 Nm
320 - 380 lb ft
24 mm
675 - 815 Nm
500 - 600 lb ft
47657027 07/04/2014
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