JBO Thread Ring Gauge (NoGo) - BSW - Right Hand - Medium Class - 1/2 x 12 Endmill25 When paired with compatible GSK

When paired with compatible GSK collets

supporting improved productivity and confidence in every job

or non‑ferrous materials

5 mm diameter and 15 mm overall length

stub-length design with DIN 8093 and ISO H4 tolerance (8

JBO Thread Ring Gauge (NoGo) - BSW - Right Hand - Medium Class - 1/2 x 12 Endmill25 When paired with compatible GSKJBO Thread Ring Gauge (NoGo) BSW Right Hand Medium Class 1 2 x 12 is a precision tool for verifying external thread diameters. Ideal for manufacturers, automotive and aerospace shops, as well as QA teams, it helps ensure threaded components meet Unified thread standards through accurate size checks. The NoGo design provides a quick, unmistakable indication of non conforming threads, helping you confirm proper fitment before assembly. Crafted from