Torque Specifications; Technical Data - Husqvarna W21 Operator's Manual

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
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