TORQUE TIGHTENING CHART 12-3
TORQUE TIGHTENING CHART 2
Note 1: Bolt head identification marks as per grade. Manufacturing mark will vary.
2580 30903500 42001600 19502175 2600M36
1470 17702000 2400920 11001250 1500M30
780 9401050 1275500 600675 815M24
450 540610 730320 380434 515M20
230 280310 380160 200217 271M16
149 179200 245106 127144 172*M14
93 112125 15066 7990 107M12
54 6473 8738 4552 61M10
27 3237 4319 2326 31M8
11 1315 17.58910.5 12M6
789.5 11566.5 8M5
Because of the low ductility of
these fasteners, the torque range
is to be determined individually
for each application. As a
general rule, the torque ranges
specified for grade 10.9fasteners
can be used satisfactorily on
12.9 fasteners
*M14 is not a preferred size.
34452334M4
Min MaxMin MaxMin MaxMin MaxMin MaxMin Max
LB - FTNmLB - FTNmLB - FTNm
Bolt Size
Bolt head identification
(see note1)
12.910.98.8ISO Class No.
METRIC FASTENER (ISO) TORQUE CHART
Note: Use these torques. unless special torques are specified. Values are UNC and UNF thread fasteners,plated or unplated as received from
supplier. Fasteners can be dry or lubricated with normal
engine oil. Values do not apply if graphite, moly-disulphite or other extreme pressure lubricant is used
8.8
10.9
12.9
12
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