TM 10-4320-342-24 APPENDIX H TORQUE LIMITS MINIMUM TYPE TENSILE MATERIAL BODY SIZE OR OUTSIDE DIAMETER OF FASTENER STRENGTH #2 #3 #4 #5 #6 #8 #10 1/4 1/10 1/8 1/16 1/2 5/16 LOW SAE 74.000 CARBON 6 12 20 32 47 69 0-1-2 PSI STEEL (8) (16) (27) (44) (64) (94) MEDIUM SAE 100,000 CARBON 9 17 30 47 69 103 3 PSI STEEL (12) (23) (41) (64) (94) (140) MEDIUM SAE 120,000 CARBON 10 19 33 54 78 114 5 PSI HEAT (14) (26) (45) (73) (106) (155) TREAT STEEL MEDIUM SAE 133.000 CARBON 12 24 43 69 106 150 6 PSI STEEL (16) (33) (58) (94) (144) (203) QUENCHED TEMPERED MEDIUM SAE 133,000 CARBON 13 25 44 71 110 154 7 PSI ALLOY (18) (34) (60) (96) (141) (209) STEEL MEDIUM SAE 150,000 CARBON 14 29 47 78 119 169 8 PSI ALLOY (19) (39) (64) (106) (161) (229) STEEL HIGH SOCKET CARBON 16 33 54 84 125 180 HEAD 160.000 CASE (22) (45) (73) (114) (170) (244) CAP PSI HARDENED SCREW STEEL HIGH SOCKET CARBON 9 16 30 70 140 18 29 43 63 SET 212.000 CASE (1.0) (1.8) (3.4) (7.9) (15.8) (2) (3.3) (4.9) (7.1) SCREW PSI HARDENED STEEL H-2