JBO Thread Plug Gauge - UNJF Go-No/Go - Right Hand - 3B - 7/16 x 20 End Mill Holders it combines standard length with

it combines standard length with a left-hand spiral flute and right-hand cutting to produce accurate holes within ISO H5 tolerance (-0 to +0

repeatable NoGo checks for the specified left‑hand threads

005 mm) ensures accurate hole dimensions and better part fits in precision assemblies

Geometry: 90° V-cut profile for clean grooves and sharp chamfers

Using this Toolex reamer helps you finish holes to exact dimensions with minimal additional machining

JBO Thread Plug Gauge - UNJF Go-No/Go - Right Hand - 3B - 7/16 x 20 End Mill Holders it combines standard length withThe JBO Thread Plug Gauge is a UNJF Go No Go tool designed to verify right hand threads in 3B class, 7 16 x 20 size. Built for manufacturers, automotive shops, and aerospace maintenance teams, it provides a straightforward way to confirm threaded holes meet Unified thread standards. Its go no go design delivers fast, objective feedbackyoull know at a glance if a hole conforms or requires adjustment, helping keep production moving and assemblies