Maintenance 5 5.4.2. Torque list Unless otherwise specified, tighten the metric bolts and nuts to the torque shown in the table. The tightening torque is determined by the width across flats of the nut and bolt. b If it is necessary to replace any nut or bolt, always use a Komatsu genuine part of the same size as the part that was replaced.. a AD053380 Metric Fine Screw Thread - Strength Class 10.9 NOTE When tightening panels or other parts having tightening fix tures made of plastic, be careful not to use excessive tight ening torque: doing so will damage the plastic parts.
WA90-5 – VEAM270100 5-21 Tread diameter of the bolt (mm) (a) Width over flats (mm) (b) Steel Aluminium Cas Nm kgm Nm kgm M6 10 14,0 1,4 7,7 0,77 M8 13 35,0 3,5 19,0 1,9 M10 17 (15) 70,0 7,0 37,0 3,7 M12 19 115,0 11,5 64,0 6,4 M14 22 185,0 18,5 101 ,5 10,15 M16 24 280,0 28,0 158 ,0 15,8 M18 27 390,0 39,0 218 ,0 21,8 M20 30 560,0 56,0 306 ,5 30,65 M22 32 750,0 75,0 416 ,0 41,6 M24 36 960,0 96,0 528 ,5 52,85 M27 41 1400,0 140,0 774 ,0 77,4 M30 46 1900,0 190,0 105 3,0 105,3 M33 50 2600,0 260,0 – – M36 55 3300,0 330,0 – – M39 60 4300,0 430,0 – –