M5-0.8 Class 8 Zinc Finish Steel with External Tooth Lockwasher K-Lock Nut / THREAD DIRECTION: RIGHT-HAND LOCKING FEATURE: NUT STYLE: A12 HEXAGON NUT HEIGHT: 3.7 MILLIMETERS MINIMUM AND 4.0 MILLIMETERS MAXIMUM END ITEM IDENTIFICATION: 016525208 WIDTH ACROSS FLATS: 7.76 MILLIMETERS MINIMUM AND 8.00 MILLIMETERS MAXIMUM THREAD SERIES: M NOMINAL THREAD SIZE: 5.0 MILLIMETERS BEARING SURFACE TYPE: CHAMFERED PART NAME ASSIGNED BY CONTROLLING AGENCY: LOCK NUT SPECIAL FEATURES: DIAMETER WITH LOCKING 9.0-9.3MM, LOCKING WASHER THICKNESS 0.6MM MATERIAL: STEEL OVERALL SURFACE TREATMENT: ZINC OVERALL