3/4"-10 Grade C Zinc Finish Steel Top Lock Nut / THREAD CLASS: 2B THREAD DIRECTION: RIGHT-HAND NUT STYLE: A12 HEXAGON END ITEM IDENTIFICATION: TOW TRACTOR, AIRCRAFT ASSEMBLY SUSP REAR; TOW TRACTOR, A/C (P/N 4JPAV, PCC 6J9); MRAP BUFFALO MK2A2 WIDTH ACROSS FLATS: 1.088 INCHES MINIMUM AND 1.127 INCHES MAXIMUM THREAD SERIES: UNC THREAD QUANTITY PER INCH: 10 NOMINAL THREAD SIZE: 0.750 INCHES PART NAME ASSIGNED BY CONTROLLING AGENCY: NUT, LOCK SPECIAL FEATURES: THICKNESS 0.617 MIN 0.827 MAX MATERIAL: STEEL OVERALL MATERIAL DOCUMENT AND CLASSIFICATION: IFI-100/107 GRADE C ASSN STD SINGLE MATERIAL RESPONSE OVERALL SURFACE TREATMENT: ZINC OVERALL SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM F1941 ASSN STD SINGLE TREATMENT RESPONSE OVERALL