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maxicut 600 - Twose

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5299 7. MAINTENANCE 0306PROPER TORQUE FOR FASTENERSThe chart below lists the correct tightening torque for fasteners. When bolts are to be tightened orreplaced, refer to this chart to determine the grade of bolts and the proper torque except when specifictorque values are assigned in manual text.RECOMMENDED TORQUE IN FOOT POUNDS (NEWTON-METERS) UNLESS OTHERWISESTATED IN THE MANUALNOTE:These values apply to fasteners as received from supplier, dry or when lubricated withnormal engine oil. They do not apply if special graphited or molydisulphide greases orother extreme pressure lubricants are used. This applies to UNF fine, UNC coarsethreads, and metric fine and course threads.Proper torque values for imperial bolts(Figures in brackets are value in Nm)Proper Torque Values for Metric boltsBoltDiameterHeadMarkingNo MarksGrade TwoPound –Foot valueDryHeadMarkingThreeLinesGrade FivePound –Foot ValueDryHeadMarkingSix LinesGrade EightPound –Foot ValueDryBoltDiameterHeadMarking4.8Pound –Foot ValueDryHeadMarking8.8 or 9.8Pound –Foot ValueDryHeadMarking10.9Pound –Foot ValueDryHeadMarking12.9Pound –Foot ValueDry¼” 5.5(7.5) 9(12.2) 12.5(17.0) 6mm 4.5(6.1) 8.5(11.5) 12(16.3) 14.5(2.0)5/16” 11(15.0) 18(25.0) 26(35.2) 8mm 11(14.9) 20(27.1) 30(40.1) 35(47.5)3/8” 20(27.0) 33(45.0) 46(63.0) 10mm 21(28.5) 40(54.2) 60(81.4) 70(95)7/16” 32(43.0) 52(70) 75(100) 12mm 37(50.2) 70(95.0) 105(140) 120(160)½” 50(68.0) 80(110) 115(155) 14mm 60(81.4) 110(150) 165(225) 190(260)9/16” 70(95.0) 115(155) 160(220) 16mm 92(125) 175(240) 255(350) 300(400)5/8” 100(135) 160(220) 225(305) 18mm 125(170) 250(340) 350(475) 410(550)¾” 175(240) 280(380) 400(540) 20mm 180(245) 350(475) 500(675) 580(790)7/8” 175(240) 450(610) 650(880) 22mm 250(340) 475(645) 675(915) 800(1090)1” 270(360) 675(915) 975(1325) 24mm 310(420) <strong>600</strong>(810) 850(1150) 1000(1350)1-1/8” 375(510) 850(115) 1350(1830) 27mm 450(610) 875(1180) 1250(1700 1500(2000)1-1/4” 530(720) 1200(16250) 1950(2650) 30mm 625(850) 1200(1610) 1700(2300) 2000(2700)1-3/8” 700(950) 1550(2100) 2550(3460)1-1/2” 930(1250) 2100(2850) 3350(4450)*To get Newton-Metres multiply pound-foot of torque by 1.3567 - 7

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