JBO Thread Plug Gauge - UNF Go-No/Go - Left Hand - 2B - No. 1 x 72 G controlled reaming action for clean

controlled reaming action for clean bore finishes

versatile design: The 50 mm diameter and 100 mm length provide a low-profile

offering long tool life

and high-speed performance helps you streamline setups

Pin-assisted opening for clean boring: Pins keep the collet open during the boring process in a 5C lathe collet chuck

JBO Thread Plug Gauge - UNF Go-No/Go - Left Hand - 2B - No. 1 x 72 G controlled reaming action for cleanThe JBO Thread Plug Gauge is a precision inspection tool designed to verify UNF (Unified Fine) threaded holes with a clear go no go signal. It is ideal for manufacturers, automotive shops, aerospace QC labs, and maintenance technicians who need fast, repeatable checks to ensure holes meet the required UNF standard and will properly accept the mating fastener. The left hand configuration targets reverse threaded components, ensuring you inspect the