Power Train Specifications 29 Metric fasteners [Usually, material strength identification on bolt head is with numbers (i.e., 8.8, 10.9, etc.)] The chart on the right gives the torque for bolts and nuts with Grade 8.8. NOTICE: Caution must be taken to avoid mixing metric and standard (customary) fasteners. Mismatched or incorrect fasteners can result in vehicle damage or malfunction, or possible personal injury. Original fasteners removed from the vehicle should be saved for assembly when possible. If new ones are required, caution must be taken to replace with one that is of same part no. and grade or better.
Metric ISO thread thread size (mm) torque (N¥m)* (lb¥ft) M6 M8 M10 M12 M14 M16 M18 M20 M22 M24 M27 M30 M33 M36 12 L 4 25 L 7 55 L 10 95 L 15 150 L 20 220 L 30 325 L 50 450 L 70 600 L 90 775 L 100 1150 L 150 1610 L 200 2000 L 275 2700 L 400 9 L 3 18 L 5 40 L 7 70 L 10 110 L 15 160 L 20 240 L 35 330 L 50 440 L 65 570 L 75 840 L 110 1175 L 150 1450 L 200 200 L 300 ISO Ð International Standard Organization Hose clamps - worm drive band type clamp width initial assembly torque on new hose reassembly or retightening torque N¥m* lb¥in N¥m* lb¥in 15.9 mm (.625 inch) 7.5 L 0.5 65 L 5 4.5 L 0.5 40 L 5 13.5 mm (.531 inch) 4.5 L 0.5 40 L 5 3.0 L 0.5 25 L 5 7.9 mm (.312 inch) 0.9 L 0.2 8 L 2 0.7 L 0.2 6 L 2 Ground engaging and cutting edge bolts and nuts -Round dome shaped head- Proof load - 120,00 psi min.
Tensile strength - 150,000 psi min. Hardness - Rockwell C 33 to 39 Size - 5/8 -Seven radial dashes- Round dome shaped head Proof load - 135,000 psi min. Tensile strength - 160,000 psi min. Hardness - Rockwell C 36 to 42 Sizes 3/4 thru 1-1/4 Torque requirements for plow bolts thread diam. standard torque inches lb. ft. N•m* 5/8 3/4 7/8 1 1-1/4 195 L 20 350 L 50 565 L 85 900 L 110 1500 L 185 265 L 25 475 L 70 765 L 115 1220 L 150 2000 L 250 *1 newton meter (N¥m) is approximately the same as 0.1 kg¥m.