JBO Thread Plug Gauge (GO) - Metric Fine - Right Hand - 6H - M72 x 1 Shrink Fit Holders A BS 328/4 taper shank

A BS 328/4 taper shank ensures secure seating in compatible holders and straightforward setup on standard machines

With an imperial 5/16-inch diameter

The ISO H5 (D) tolerance ensures accurate dimension control

and it uses a standard 6 mm shank to ensure broad compatibility with a wide range of milling machines

Durable carbide construction: Provides long tool life and wear resistance across common metals

JBO Thread Plug Gauge (GO) - Metric Fine - Right Hand - 6H - M72 x 1 Shrink Fit Holders A BS 328/4 taper shankThe JBO Thread Plug Gauge (GO) Metric Fine Right Hand 6H M72 x 1 is a precision GO plug gauge used to verify internal threads in threaded holes. Designed for quality control, machining, and maintenance, it quickly confirms whether a hole will accommodate the intended fastener. Built from hardened steel, this gauge resists wear and maintains accuracy even with frequent use in demanding workshops. The metric fine thread and right hand orientation align