TM 1-1500-204-23-6 Table 2-9.  Recommended Torque Values Size Plain & castellated Thin plain & castellated and steel hex nuts used steel hex nuts used thread with bolts in tension with bolts in shear loading loading average range (In-lbs)¹ average range (in-lbs)l Fine Thread 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 1-14 3700-5500 2200-3300² 1 1/8-12 5000-7000 3000-4200² 1 1/4-12 9000-11000 5400-6000² Coarse Thread 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 See footnotes at end of table. 2-31