34TECHNICAL DATAStandard 1/4" fasteners 9 ft/lbStandard 5/16" fasteners 18 ft/lbStandard 3/8" fasteners 33 ft/lbStandard 7/16" fasteners 52 ft/lbStandard 1/2" fasteners 80 ft/lbHEX HEAD CAP SCREWSThe torque values shown should be used as a general guidelinewhen specific torque values are not given.U.S. Standard HardwareGrade SAE Grade 5 SAE Grade 8 Flangelock Screww/Flangelock NutSize ft./lbs Nm ft./lbs Nm ft./lbs NmShank Size (Diameter in inches,fine or coarse thread)1/4 9 12 13 185/16 18 24 28 38 24 333/8 31 42 46 62 40 547/16 50 68 75 1021/2 75 102 115 1569/16 110 149 165 2245/8 150 203 225 3053/4 250 339 370 5027/8 378 512 591 8011-1/8 782 1060 1410 1912** Grade 5 - Minimum commercial quality (lower quality not recommended)Metric Standard HardwareGrade Grade 8.8 Grade 10.9 Grade 12.9Size ft./lbs Nm ft./lbs Nm ft./lbs NmShank Size (Diameter in millimeters,fine or coarse thread)M4 1.5 2 2.2 3 2.7 3.7M5 3 4 4.5 6 5.2 7M6 5.2 7 7.5 10 8.2 11M7 8.2 11 12 16 15 20M8 13.5 18 18.8 25 21.8 30M10 24 33 35.2 48 43.5 59M12 43.5 59 62.2 84 75 102M14 70.5 96 100 136 119 161M16 108 146 147 199 176 239M18 142 193 202 274 242 328M20 195 264 275 373 330 447M22 276 374 390 529 471 639M24 353 478 498 675 596 808M27 530 719 735 996 904 1226Engine crankshaft bolt 50 ft/lbDeck pulley bolts 150 ft/lbLug nuts 75 ft/lbBlade bolt 90 ft/lbTorque Specifications