1"-8 Grade C Zinc Finish Steel Top Lock Nut / THREAD CLASS: 2B THREAD DIRECTION: RIGHT-HAND LOCKING FEATURE: PREVAILING TORQUE ALL METAL DESIGN NUT STYLE: A12 HEXAGON NUT HEIGHT: 0.831 INCHES MINIMUM AND 1.018 INCHES MAXIMUM WIDTH ACROSS FLATS: 1.450 INCHES MINIMUM AND 1.502 INCHES MAXIMUM THREAD SERIES: UNC THREAD QUANTITY PER INCH: 8 NOMINAL THREAD SIZE: 1.000 INCHES BEARING SURFACE TYPE: FLAT PART NAME ASSIGNED BY CONTROLLING AGENCY: TOP LOCK NUT, IFI 100/107, GRADE C SPECIAL FEATURES: THREAD CLASSIFICATION MAY ALSO BE UNF MATERIAL: STEEL OVERALL SURFACE TREATMENT: ZINC OVERALL