SAE AS 5929-2006
履带支重轮、冠状辐射式外径、整体柱头螺栓、VII型抗摩擦、耐腐蚀氮(CREN)钢和耐腐蚀(CRES)钢滚针轴承
BEARING, ROLLER, NEEDLE, TRACK ROLLER, CROWN RADIUSED O.D., INTEGRAL STUD, TYPE VII, ANTI-FRICTION, CORROSION RESISTANT NITROGEN (CREN) STEEL AND CORROSION RESISTANT (CRES) STEEL, INCH FSC 3110