JBO Thread Ring Gauge (NoGo) - Pg - Right Hand - Pg 21 x 16 Endmill25 helping you speed up inspections

helping you speed up inspections and keep production moving with fewer hold-ups

Newer versions feature improved longevity with no rubber seal on the nose

5/16 x 18 is a precision inspection tool used to verify external thread diameters on fasteners

and hobbyists who need a true

It helps reduce rework and rejects by identifying out-of-spec holes early

JBO Thread Ring Gauge (NoGo) - Pg - Right Hand - Pg 21 x 16 Endmill25 helping you speed up inspectionsJBO Thread Ring Gauge (NoGo) Right Hand, Pg 21 x 16 is a precision tool designed to quickly validate external thread diameters against Unified thread standards. It is ideal for manufacturing, automotive, aerospace, and maintenance environments where reliable fit and function matter, providing a clear go no go indication to separate compliant parts from those that fall outside tolerance. No Go design for rapid pass fail checks: Quickly identifies non