RadTech 21700001, Owner'S Manual, Page: 45 / 52

TORQUE SPECIFICATION TABLE
[43]
G
ENERAL SPECIFICATION TABLE
U
SE THE FOLLOWING TORQUES WHEN SPECIAL TORQUES ARE NOT GIVEN
Note:These values apply to fasteners as received from supplier dry, or when lubricated with normal engine oil. They do not apply
if special graphited or moly sidulphide greases or other extreme pressure lubricants are used. These values apply to dry
conditions; under lubricated conditions reduce by 25% the torques in this table.
B
OLT HEAD
I
DENTIFICATION
INCHES
Bolt Size
Grade 2 Grade 5 Grade 8
METRIC
Bolt Size
Class 5.8 Class 8.8 Class 10.9
in-tpi
1
N-m
2
lbs-ft
3
N-m lbs-ft N-m lbs-ft mm
x
pitch
4
N-m lbs-ft N-m lbs-ft N-m lbs-ft
1/4" – 20NC 7.4 5.6 11
8
16 12
M 5 X 0.8
4 3 6 5 9 7
1/4" – 28NF 8.5 6 13 10 18 14 M 6 X 1 7 5 11 8 15 11
5/16" – 18NC 15 11 24 17 33 25 M 8 X 1.25 17 12 26 19 36 27
5/16" – 24NF 17 13 26 19 37 27 M 8 X 1 18 13 28 21 39 29
3/8" – 16NC 27 20 42 31 59 44 M10 X 1.5 33 24 52 39 72 53
3/8" – 24NF 31 22 47 35 67 49 M10 X 0.75 39 29 61 45 85 62
7/16" – 14NC 43 32 67 49 95 70 M12 X 1.75 58 42 91 67 125 93
7/16" – 20NF 49 36 75 55 105 78 M12 X 1.5 60 44 95 70 130 97
1/2" – 13NC 66 49 105 76 145 105 M12 X 1 90 66 105 77 145 105
1/2" – 20NF 75 55 115 85 165 120 M14 X 2 92 68 145 105 200 150
9/16" – 12NC 95 70 150 110 210 155 M14 X 1.5 99 73 155 115 215 160
9/16" – 18NF 105 79 165 120 235 170 M16 X 2 145 105 225 165 315 230
5/8" – 11NC 130 97 205 150 285 210 M16 X 1.5 155 115 240 180 335 245
5/8" – 18NF 150 110 230 170 325 240 M18 X 2.5 195 145 310 230 405 300
3/4" – 10NC 235 170 360 265 510 375 M18 X 1.5 220 165 350 260 485 355
3/4" – 16NF 260 190 405 295 570 420 M20 X 2.5 280 205 440 325 610 450
7/8" – 9NC 225 165 585 430 820 605 M20 X 1.5 310 230 650 480 900 665
7/8" – 14NF 250 185 640 475 905 670 M24 X 3 480 355 760 560 1050 780
1" – 8NC 340 250 875 645 1230 910 M24 X 2 525 390 830 610 1150 845
1" – 12NF 370 275 955 705 1350 995 M30 X 3.5 960 705 1510 1120 2100 1550
1 1/8" – 7NC 480 355 1080 795 1750 1290 M30 X 2 1060 785 1680 1240 2320 1710
1 1/8" – 12NF 540 395 1210 890 1960 1440 M36 X 3.5 1730 1270 2650 1950 3660 2700
1 1/4" – 7NC 680 500 1520 1120 2460 1820 M36 X 2 1880 1380 2960 2190 4100 3220
1 1/4" – 12NF 750 555 1680 1240 2730 2010
1
in-tpi =
nominal thread diameter in inches-threads per inch
2
N-m = newton-meters
3
lbs-ft= pounds-foot
4
mm x pitch = nominal thread diameter in millimeters x thread Pitch
1 3/8" – 6NC 890 655 1990 1470 3230 2380
1 3/8" – 12NF 1010 745 2270 1670 3680 2710
1 1/2" – 6NC 1180 870 2640 1950 4290 3160
1 1/2" – 12NF 1330 980 2970 2190 4820 3560
*Torque tol0%, -15% of torquing values. Unless otherwise specified use torque values listed above
5.8
8.8 10.9