JBO Thread Ring Gauge (GO) - UNEF - Left Hand - 2A - 15/16 x 20 Shrink Fit Holders Material: Intermediate precision carbide (K10)

Material: Intermediate precision carbide (K10) for hardness and wear resistance

ISO H5 tolerance: Provides secure tool seating in compatible holders and tight bore control (-0 to +0

supporting smoother finishing and fewer secondary operations

high-quality rib contours with fewer passes and less manual touch-up

and delivers consistent results across a variety of common metalworking tasks

JBO Thread Ring Gauge (GO) - UNEF - Left Hand - 2A - 15/16 x 20 Shrink Fit Holders Material: Intermediate precision carbide (K10)The JBO Thread Ring Gauge (GO) UNEF Left Hand 2A 15 16 x 20 is a precision tool designed for quick, reliable checks of external threads on left hand components. Ideal for machinists, inspectors, and quality teams, it helps verify that parts conform to the 15 16 20 UNEF left hand specification with confidence and speed. Precise GO gauge for UNEF left handed external threads: quickly confirm whether a parts diameter meets the 15 16 x 20 UNEF left hand