1-1/4"-7 Grade C Zinc Finish Steel Collar Style Top Lock Nut / THREAD CLASS: 2B THREAD DIRECTION: RIGHT-HAND LOCKING FEATURE: PREVAILING TORQUE ALL METAL DESIGN LUBRICATION: WAX NUT STYLE: A12 HEXAGON NUT HEIGHT: 1.030 INCHES MINIMUM AND 1.272 INCHES MAXIMUM WIDTH ACROSS FLATS: 1.812 INCHES MINIMUM AND 1.877 INCHES MAXIMUM THREAD SERIES: UNC THREAD QUANTITY PER INCH: 7 NOMINAL THREAD SIZE: 1.250 INCHES BEARING SURFACE TYPE: FLAT PART NAME ASSIGNED BY CONTROLLING AGENCY: COLLAR LOCK NUT, GRADE C SPECIAL FEATURES: THREAD CLASSIFICATION MAY ALSO BE UNF MATERIAL: STEEL OVERALL SURFACE TREATMENT: ZINC OVERALL