APPENDIX G TORQUE LIMITS

Section II. DEFINITION OF UNUSUAL TERMS - TM-10-4320-309-14_212

TM-10-4320-309-14 Pump Unit Centrifugal Self-Priming 125 GPM Class 3 Diesel-Driven Army (NSN 4320-01-247-7127) Marine Corps (NSN 4320-01-313-9442) Manual
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TM 10-4320-309-14 TM 4320-14/1 APPENDIX G TORQUE LIMITS NOTE To determine breakaway torque, thread nut onto screw or bolt until at least two threads stick out. Nut shall not make contact with a mating part. Stop the nut. Torque necessary to begin turning nut again is the breakaway torque. Do not reuse self-locking nuts that do not meet minimum break- away torque. SELF-LOCKING NUT BREAKAWAY TORQUE VALUES Thread Minimum Breakaway Thread Minimum Breakaway Size Torque (In.-Lb) Size Torque (In.-Lb) 10-32 2.0 5/8-18 32.0 1/4-28 3.5 3/4-16 50.0 5/1 6-24 6.5 7/8-14 70.0 3/8-24 9.5 1-12 90.0 7/16-20 14.0 1-1/8-12 117.0 1/2-20 18.0 1-1/4-12 143.0 9/16-18 24.0 Standard tightening torque for metric bolts and nuts M6 - 5.0 - 7.0 lb-ft ( 70-100 kg-cm) M8 -13.0 - 14.5 lb-ft (180-200 kg-cm) Specfic Torque Requirements - use table from next page. G-1

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