Quantcast TIGHTENING METAL FASTENERS

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TM 9--2815--247--34 0101 00--2 TORQUE LIMITS -- CONTINUED 0101 00 HOW TO USE TORQUE TABLES -- CONTINUED Table 3. Stud Torques in Aluminum With Lubriplate or OE--30 Engine Oil SIZE DIA. (Inch) TORQUE (Lb--In) #10 25 0.250 50 0.3125 85 0.375 156 0.4375 240 0.5625 Cylinder Deck Studs 850 MIN--2500 MAX Use 75% Kerosene and 25% 847M oil as Lubri- cant 0.625 600 0.750 600 TIGHTENING METAL FASTENERS When torquing a fastener, select a wrench whose range (TABLE 4) fits the required torque value. A torque wrench is most accurate from 25% to 75% of its stated range. A wrench with a stated range of 0 to 100 lb--ft will be most accurate from 25 to 75 lb--ft. The accuracy of readings will decrease as you approach 0 lb--ft or 100 lb--ft. The fol- lowing ranges are based on this principle. Table 4. Torque Ranges STATED RANGE MOST EFFECTIVE RANGE 0--200 lb--ft 50--150 lb--ft 0--600 lb--ft 150--450 lb--ft 0--170 lb--ft 44--131 lb--ft 15--75 lb--ft 30--60 lb--ft END OF TASK


 


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