JBO Thread Plug Gauge - UNF Go-No/Go - Right Hand - 3B - 1/4 x 28 ER Collet Chucks stub-length construction: Combines hardness and

stub-length construction: Combines hardness and stiffness for long tool life in demanding reaming tasks

it features a left-hand spiral flute and right-hand cutting to deliver reliable results in a wide range of metalworking tasks

this tool helps you cut faster with confidence

Carbide (K10) construction for durability: Intermediate precision carbide (K10) provides wear resistance and consistent sizing for repeated use

JBO Thread Plug Gauge - UNF Go-No/Go - Right Hand - 3B - 1/4 x 28 ER Collet Chucks stub-length construction: Combines hardness andThe JBO Thread Plug Gauge is a precision tool designed to verify UNF threaded holes with quick, reliable Go No Go checks. Sized for the UNF 1 4 x 28, Right Hand, 3B internal threads, its ideal for manufacturing, automotive, and aerospace environments where consistent thread quality matters. Its two ended design lets you test both the minimum and maximum limits of your threaded hole, delivering clear pass fail results that keep production moving and