TM 10-4930-247-13&P APPENDIX I TORQUE LIMITS - cont. MINIMUM TENSILE BODY SIZE OR OUTSIDE DIAMETER OF FASTENER TYPE STRENGTH MATERIAL #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 3 100,000 CARBON 9 17 30 47 69 103 PSI STEEL (12) (23) (41) (64) (94) (140) MEDIUM CARBON SAE 5 120,000 HEAT 10 19 33 54 78 114 PSI TREAT (14) (26) (45) (73) (106) (155) STEEL MEDIUM CARBON SAE 6 133,000 STEEL 12 24 43 69 106 150 PSI QUENCHED (16) (33) (58) (94) (144) (203) TEMPERED MEDIUM SAE 7 133,000 CARBON 13 25 44 71 110 154 PSI ALLOY (18) (34) (60) (96) (141) (209) STEEL MEDIUM SAE 8 150,000 CARBON 14 29 47 78 119 169 PSI ALLOY (19) (39) (64) (106) (161) (229) STEEL HIGH SOCKET CARBON HEAD 160,000 CASE 16 33 54 84 125 180 CAP PSI HARDENED (22) (45) (73) (114) (170) (244) SCREW STEEL HIGH SOCKET CARBON SET 212,000 CASE 9 16 30 70 140 18 29 43 63 SCREW PSI HARDENED (1.0) (1.8) (3.4) (7.9) (15.8) (2.0 ) (3.3) (4.9) (7.1) STEEL I-2