FOREWORD STANDARD TIGHTENING TORQUE 12 GRADE 5 AND 8 NON-PHOSPHATE COATED HARDWARE 00 Recommended torque for all standard application nuts and bolts, provided; all thread surfaces are clean and lubricated with SAE-30 engine oil or joints are rigid, that is, no gaskets or compressible materials are used. When reusing nuts or bolts, use minimum torque values. Multiply the standard torque by 0.65 when finished jam nuts are used, 0.7 when molykote, white lead or similar mixture are used as lubricants, 0.75 when parkerized bolts or nuts are used, 0.85 when cadmium plated bolts or nuts and zinc bolts with waxed zinc nuts are used or 0.9 when hardened surfaces are used under the nut or bolt head.
The general torque must be used in all cases where special torques are not given. Values listed in this manual are lubricated (wet) threads; values should be increased 1/3 for non lubricated (dry) threads.
PC300LL-6 00-13 THREAD GRADE 5 N•m lbf ft 1/4NC 8 6 1/4NF 9 7 5/16NC 18 13 5/16NF 20 15 3/8NC 33 24 3/8NF 37 27 7/16NC 52 38 7/16NF 57 42 1/2NC 79 58 1/2NF 88 65 9/16NC 114 84 9/16NF 126 93 5/8NC 156 115 5/8NF 175 130 3/4NC 278 205 3/4NF 312 240 7/8NC 414 305 7/8NF 454 334 1NC 617 455 1NF 691 510 1-1/8NC 827 610 1-1/8NF 929 685 1-1/4NC 1166 860 1-1/4NF 1295 955 1-3/8NC 1532 1130 1-3/8NF 1749 1290 1-1/2NC 2034 1400 1-1/2NF 2291 1690 1-3/4NC 3213 2370 2NC 4813 3550 THREAD GRADE 8 N•m lbf ft 1/4NC 12 9 1/4NF 15 11 5/16NC 24 18 5/16NF 28 21 3/8NC 46 34 3/8NF 52 38 7/16NC 73 54 7/16NF 81 60 1/2NC 111 82 1/2NF 122 90 9/16NC 163 120 9/16NF 179 132 5/8NC 224 165 5/8NF 251 185 3/4NC 393 290 3/4NF 434 320 7/8NC 617 455 7/8NF 698 515 1NC 942 695 1NF 1064 785 1-1/8NC 1342 990 1-1/8NF 1505 1110 1-1/4NC 1898 1400 1-1/4NF 2102 1550 1-3/8NC 2481 1830 1-3/8NF 2827 2085 1-1/2NC 3295 2430 1-1/2NF 3701 2730 1-3/4NC 5166 3810 2NC 7810 5760