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ODB COMPANY
800-446-9823 LCT6000
Maintenance Section
4.5 Torque Values
INCH BOLT AND CAP SCREW
TORQUE VALUES
METRIC BOLT AND CAP SCREW TORQUE
VALUES
TYPE SAE GRADE CLASS
5 8 8.8 or 9.8 10.9 12.9
HEAD
MARK
HEAD
MARK
SIZE(D) LB-FT LB-FT SIZE(D) LB-FT LB-FT LB-FT
Lub* Dry* Lub* Dry* Lub* Dry* Lub* Dry* Lub* Dry*
1/4"
7 9 10 12.5 M6 6.5 8.5 9.5 12 11.5 14.5
5/16"
15 18 21 26 M8 16 20 24 30 28 35
3/8"
26 33 36 46 M10 32 40 47 60 55 70
7/16"
41 52 58 75 M12 55 70 80 105 95 120
1/2"
63 80 90 115 M14 88 110 130 165 150 190
9/16"
90 115 130 160 M16 140 175 200 255 240 300
5/8"
125 160 175 225 M18 195 250 275 350 325 410
3/4"
225 280 310 400 M20 275 350 400 500 460 580
7/8"
360 450 500 650 M22 375 475 540 675 625 800
1"
540 675 750 975 M24 475 600 675 850 800 1000
1-1/8"
675 850 1075 1350 M27 700 875 1000 1250 1150 1500
1-1/4"
950 1200 1500 1950 M30 950 1200 1350 1700 1600 2000
1-3/8"
1250 1550 2000 2550 M33 1300 1650 1850 2350 2150 2750
1-1/2"
1650 2100 2650 3350 M36 1650 2100 2350 3000 2750 3500
*Lub means coated with a lubricant such as engine oil, or fasteners with phospate or oil coatings. "Dry"
means plain or zinc plated without any lubrication.
DO NOT use these values if a different torque value or tightening procedure is given for a specic appli-
cation. Torque values listed are for general use only. Check tightness of fasteners periodically.
Make sure fastener threads are clean and that you properly start thread engagement. This will prevent
them from failing when tightening. Fasteners should be replaced with the same or higher grade. If
higher grade fasteners are used, these should only be tightened to the strength of the original.
Tighten plastic insert or crimped steel-type lock nuts to approximately 50 percent of the dry torque shown
inthe chart, applied to the nut, not the bolt head.
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