JBO Thread Plug Gauge - UNC Go-No/Go - Right Hand - 2B - No. 5 x 40 Die & Mould Collet Chucks The square-edge geometry produces clean

The square-edge geometry produces clean

and a long reach reduces tool changes and rework

0 mm—with a tight tolerance of +0/-0

Its durability and thoughtful design minimize downtime and maintenance

JBO Thread Plug Gauge - UNC Go-No/Go - Right Hand - 2B - No. 5 x 40 Die & Mould Collet Chucks The square-edge geometry produces cleanThe JBO Thread Plug Gauge is a precision inspection tool for verifying UNC threaded holes. Designed for engineers, machinists, quality inspectors, and technicians across manufacturing, automotive, and aerospace sectors, it helps confirm that holes meet Unified Thread Standard requirements. In a compact righthand 2B gauge sized No. 5 x 40, it delivers quick, reliable go no go checks that support proper fitment and repeatable results. Go No Go quick