TM 5-3895-373-20 SECTION II.  TORQUE LIMITS FOR HEX HEAD CAP SCREWS AND BOLTS. NOTE These are modified torque values for use with Loctite #271 (except where noted).  Loctite #242 is used on fasteners 5/16 (M8) or smaller. Torque Size (Modified SAE Grade 8) Bolt Size Threads Pound-Feet Newton-Meters Diameter Per Inch Millimeters (Ib-ft) (N•m) 1/4 20 6.35 9 12 1/4 28 6.35 11 15 5/16 18 7.94 19 26 5/16 24 7.94 21 28 3/8 16 9.53 37 50 3/8 24 9.53 42 57 7/16 14 11.11 59 80 7/16 20 11.11 66 89 1/2 13 12.70 90 122 1/2 20 12.70 100 136 9/16 12 14.29 130 176 9/16 18 14.29 145 197 5/8 11 15.88 180 244 5/8 18 15.88 205 278 3/4 10 19.05 320 434 3/4 16 19.05 355 481 7/8 9 22.23 515 698 7/8 14 22.23 570 773 1 8 25.40 775 1051 I 12 25.40 845 1146 1-1/8 7 25.58 1100 1491 1-1/8 12 25.58 1230 1668 1-1/4 7 31.75 1540 2088 1-1/4 12 31.75 1710 2318 1-3/8 6 34.93 2020 2739 1/38 12 34.93 2300 3118 1-1/2 6 38.10 2690 3647 1-1/2 12 38.10 3020 4095 F-2