214367 97 Revision A5 Reference5.1 Torque SpecificationsThe following tables provide correct torque values for various bolts, cap screws, and hydraulic fittings.• Tighten all bolts to torque values specified in charts (unless otherwise noted throughout this manual).• Replace hardware with same strength and grade of bolt.• Use torque value tables as a guide and periodically check tightness of bolts.• Understand torque categories for bolts and cap screws by using their identifying head markings.Jam nutsWhen applying torque to finished jam nuts, multiply the torque applied to regular nuts by f=0.65.Self-tapping screwsStandard torque is to be used (not to be used on critical or structurally important joints).5.1.1 SAE Bolt Torque SpecificationsTorque values shown in following tables are valid for non-greased, or non-oiled threads and heads; therefore,do NOT grease or oil bolts or cap screws unless otherwise specified in this manual.A1004958BCDFigure 5.1: Bolt GradesA - Nominal Size B - SAE-8C - SAE-5 D - SAE-2Table 5.1 SAE Grade 5 Bolt and Grade 5 FreeSpinning NutNominalSize (A)Torque (Nm) Torque (lbf·ft)(*lbf·in)Min. Max. Min. Max.1/4-20 11.9 13.2 *106 *1175/16-18 24.6 27.1 *218 *2413/8-16 44 48 32 367/16-14 70 77 52 571/2-13 106 118 79 879/16-12 153 170 114 1265/8-11 212 234 157 1733/4-10 380 420 281 3117/8-9 606 669 449 4961-8 825 912 611 676
