12-2 KL155
TORQUE TIGHTENING CHART 1
Note 1: Bolt head identification marks as per grade. Manufacturing marks will vary. *Thick nuts must be used with Grade 8 bolt
4285 48273160 35602631 29831940 22001 1/2
3227 36882380 27201980 22781460 16801 3/8
2468 27121820 20001519 16811120 12401 1/4
1736 19531280 14401085 1193 800 8801 1/8
1220 1464900 1080787 944580 696339 406250 3001
814 976600 720542 651400 480217 271160 2007/8
515 618380 456366 439270 324203 251150 1853/4
298 358220 264203 244150 180129 14295 1055/8
217 260160 192149 179110 13288 10265 759/16
149 179110 132109 13080 9661 70 45 521/2
95 11470 8473 87 54 6441 4730 357/16
61 7345 5448 5735 4227 31 20 233/8
33 3924 2923 2817 20.514 1610 125/16
16 2012 15
12 1591178561/4
Min MaxMin MaxMin MaxMin MaxMin MaxMin Max
NmLB -FTNmLB - FTNmLB - FT
Bolt size
Bolt head identification
(see note 1)
8*52SAE Grade No.
Note:Use these torques, unless special torques are specified. Values are for UNF thread fasteners, plasted or unplated as received from supplier.
Fasteners can be dry or lubricated with normal engine oil. Values do not apply if graphite, moly-disulphide or other extreme pressure lubricant is used.