JBO Thread Plug Gauge - UNF Go-No/Go - Left Hand - 2B - No. 2 x 64 Hex Key Drill Chuck flush seating for standard fasteners

flush seating for standard fasteners and delivers a professional finish across common metals

Because the tool is manufactured to order

repeatable hole sizes for reliable fits and reduced rework across parts and assemblies

reliable go/no-go checks in standard QA workflows across manufacturing

JBO Thread Plug Gauge - UNF Go-No/Go - Left Hand - 2B - No. 2 x 64 Hex Key Drill Chuck flush seating for standard fastenersThe JBO Thread Plug Gauge is a precision tool that quickly verifies UNF threaded holes. Its go no go design lets technicians determine at a glance whether a hole conforms to the Unified thread standard, helping ensure proper fit and reliable performance in assemblies. This left hand gauge is sized No. 2 x 64 and specified as 2B, making it ideal for shops and production lines that routinely inspect left hand UNF threads. Its compact, hand friendly form