De-sta-co INDEX DRIVES GENERAL SERVICE MANUAL Manuel d'utilisateur télécharger pdf (Page 19)

Recommended Tightening Torque Values for Cap Screws

SAE Grade 2

Torque Spec.

(ft/lbs)

SAE Grade 5

Torque Spec

(ft/lbs)

SAE Grade 8

Torque Spec

(ft/lbs)

Thread Size

into Aluminum into Steel into Aluminum into Steel into Aluminum into Steel

.250-20 3.7 5.5 5.3 8 8 12

.250-28 4.1 6.2 6.7 10 9.3 14

.312-18 7.3 11 11 17 16 24

.375-16 13 20 20 30 30 45

.375-24 15 23 23 35 33 50

.437-14 21 32 33 50 46 70

.437-20 24 36 36 55 53 80

.500-13 33 50 50 75 73 110

.500-20 36 55 56 85 80 120

.562-12 46 70 73 110 100 150

.562-18 53 80 80 120 113 170

.625-11 66 100 100 150 140 210

.625-18 73 110 113 170 160 240

.750-10 116 175 173 260 253 380

.750-16 133 200 200 300 280 420

.875-9 113 170 286 430 400 600

.875-14 119 180 313 470 446 670

1.00-8 166 250 426 640 606 910

1.00-14 186 280 480 720 680 1020

1.12-7 233 350 526 790 860 1290

1.12-12 266 400 593 890 960 1440

1.25-7 333 500 746 1120 1213 1820

1.25-12 366 550 826 1240 1340 2010

1.50-6 580 870 1300 1950 2106 3160

1.50-12 563 980 1466 2200 2373 3560

Spiralock Thread

.250-20SL* 4.3 6.3 6.1 9 11.5 14

* Used on 601RDM Housing and input cartridge

NAAMS STD F-2.3 NAAMS STD F-2.3

Into Steel Into Aluminum Into Steel Into Aluminum

Thread Size

10.9/12.9

Nm Ft-lb Nm Ft-lb

Thread Size

8.8

Nm Ft-lb Nm Ft-lb

M6x1.0 16 12 11 8 M6x1.0 10.5 7.7 7 5

M8x1.25 39 29 26 19 M8x1.25 26 19 17 13

M10x1.5 77 57 50 37 M10x1.5 51 37 34 25

M12x1.75 135 100 89 66 M12x1.75 89 65 59 43

M16x2.0 335 247 220 163 M16x2.0 215 158 143 105

M20x2.5 650 480 430 315 M20x2.5 420 309 280 205

M24x3.0 1130 834 745 550 M24x3.0 725 534 483 355

M30x3.5 2240 1653 1478 1090 M30x3.5 1450 1069 965 712

Note: Torque values are for non-lubricated cap screws, coated only with a residual film of oil, as

received from the manufacture and a thread locking solution applied to the threads. IMC

recommends "Loctite Removable Threadlocker 242" be applied to all fasteners and tapped holes at

assembly

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De-sta-co INDEX DRIVES GENERAL SERVICE MANUAL Manuel d'utilisateur Page 19

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