TM 55-1560-307-13&P Table F-2.  Recommended Torque Values Fine Thread Plain & Castellated Thin Plain & Castellated Steel Hex Nuts Steel Hex Nuts Size Used with Bolts in Used with Bolts in and Note (8) Tension Note (8) Shear Thread Loading Loading Average Average NO. 6-40 10.2-11.2 9.5-10.5 8-36 12-15 7-9 10-32 20-25 12-15 1/4-28 50-70 30-40 5/16-24 100-140 60-85 3/8-24 160-190 95-110 7/16-20 450-500 270-300 1/2-20 480-690 290-410 9/16-18 800-1000 480-600 5/8-18 1100-1300 600-780 3/4-16 2300-2500 1300-1500 7/8-14 2500-3000 1500-1800 Coarse Thread NO. 6-32 8.2-9.2 7.8-8.8 8-32 12-15 7-9 10-24 20-25 12-15 1/4-20 40-50 25-30 5/16-18 80-90 48-55 3/8-16 160-185 95-100 7/16-14 235-255 140-155 1/2-13 400-480 240-290 9/16-12 500-700 300-420 5/8-11 700-900 420-540 3/4-10 1150-1600 700-950 7/8-9 2200-3000 1300-1800 NOTES: 1. THE ABOVE TORQUE LOADS MAY BE USED FOR ALL CADMIUM-PLATED STEEL NUTS OF THE FINE OR COARSE THREAD SERIES WHICH HAVE APPROXIMATELY EQUAL NUMBER OF THREADS AND EQUAL BEARING AREAS. 2. TORQUE VALUES ARE IN INCH-POUNDS. 3. TORQUE VALUES ARE NOMINAL AND MAY NOT AGREE WITH SPECIFIC AIRCRAFT OR ENGINE MAINTENANCE MANUALS.  TORQUE VALUES CITED IN SPECIFIC MANUALS ARE CORRECT FOR INDIVIDUAL APPLICATION. 4. SIZE REFERS TO BOLT SHANK DIAMETER OR INSIDE DIAMETER OF NUT AND THREAD INDICATES NUMBER OF THREADS PER INCH. 5. TORQUE VALUES ARE DERIVED FROM OIL-FREE CADMIUM-PLATED THREADS. 6. ALL TORQUE VALUES ARE BASED ON USE OF 125 KSI BOLTS. 7. AVERAGE TORQUE VALUES IN SHEAR LOADING ARE APPROXIMATELY 60% OF AVERAGE TORQUE VALUE IN TENSION LOADING. 8. TORQUE VALUES ARE APPLICABLE TO SELF-LOCKING NUTS AS WELL.  (REFERENCE TABLE F-1.) F-3/(F-4 Blank)