APPENDIX EE TORQUE LIMITSLIMITS

M1079 WINDOW SASH GLAZING SEALS - TM-9-2320-365-34-2_1218

APPENDIX E TORQUE LIMITS - TM-9-2320-365-34-2_1221

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TM 9-2320-365-34-2 APPENDIX EE TORQUE LIMITSLIMITS E-1. GENERAL This appendix provides general torque limits for screws and nuts used on the vehicle. Special torque limits are shown in the maintenance procedures for applicable components. Use the general torque limit given in this appendix when specific torque limits are not given in the maintenance procedure. These general torque limits can not be applied to screws that retain rubber components. The rubber components will be damaged before the torque limit is reached. If a special torque limit is not given in the maintenance instructions for a fastener which retains a rubber component, tighten the screw or nut until it touches metal, then tighten one more turn. Whenever possible, the tightening force (torque) should be applied to the nut side of the fastener group. E-2. TORQUE LIMITS Refer to Table E-1. Torque Limits for SAE and ANSI Fasteners for torque limits on standard (SAE and ANSI) screws and free spinning nuts. Refer to Table E-2. Torque Limits for SAE and ANSI Prevailing Torque Nuts for torque limits on standard (SAE and ANSI) self-locking nuts. Refer to Table E-3. Torque Limits for Metric Screws and Free Spinning Nuts for torque limits on metric screws and free spinning nuts. Refer to Table E-4. Torque Limits for Metric Prevailing Torque Nuts for torque limits on metric self-locking nuts. E-3. USE OF TORQUE TABLES (1) Measure the diameter of the screw to be installed. (2) Count the number of threads per inch. (3) Under the heading DIAMETER look down the column until the diameter of the screw is found. (There are usually two lines beginning with the same diameter.) (4) Under the heading THREADS PER INCH (SAE and ANSI) or THREAD PITCH (metric), find the number of threads per inch that matches the number counted in step (2). (5) To find the grade of the screw, match the markings on the head to the correct picture under CAPSCREW HEAD MARKINGS on the torque table. (6) Look down the column under the picture found in step (5) until the torque limit (lb-ft or N·m) for the diameter and threads per inch (or thread pitch, in the case of metric fasteners) of the screw are located. E-1

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