JBO Thread Plug Gauge - UNEF Go-No/Go - Left Hand - 2B - 1/2 x 28 Face Mill Arbors delivering durable performance in demanding

delivering durable performance in demanding shop settings

and a straightforward shank design helps you finish holes to tight tolerances with fewer passes

The 40-tooth geometry balances aggressive material removal with a clean slot finish

wear-resistant body and contact surfaces built to endure busy shop floors and long service life

ergonomic build: Knurled grip and dual-ended threaded ends provide secure handling and versatile setup for busy shop environments

JBO Thread Plug Gauge - UNEF Go-No/Go - Left Hand - 2B - 1/2 x 28 Face Mill Arbors delivering durable performance in demandingThe JBO Thread Plug Gauge is a UNEF Go No Go tool designed to quickly verify the accuracy of left hand threaded holes sized 1 2 x 28, within the 2B tolerance class. Its precise dimensions help ensure consistent results when inspecting hole size and thread fit, so you can trust every measurement in your quality checks. Ideal for engineers, machinists, inspectors, and buyers across manufacturing, automotive, and aerospace, this gauge enables fast,