M6-1.0 DIN 980 Class 10 Zinc Finish Steel Top Lock Nut / END ITEM IDENTIFICATION: MRAP - COMMON NSN - USED ON 3 MRAP VARIANTS AND 4 OTHER WEAPON SYSTEMS. NOMINAL THREAD SIZE: 6.0 MILLIMETERS THREAD PITCH IN MILLIMETERS: 1.00 PART NAME ASSIGNED BY CONTROLLING AGENCY: NUT,HEX METRIC PREV. TORQ M6 H SPECIAL FEATURES: M6 METRIC SERIES TORQUE HEX FLANGE NUT- WITH PHOSPHATE COATING. MATERIAL: STEEL OVERALL SURFACE TREATMENT: PHOSPHATE MANGANESE OVERALL