JBO Thread Plug Gauge - UNJF Go-No/Go - Right Hand - 3B - No. 12 x 28 Widin New 76 mm taper-shank reamer delivers

76 mm taper-shank reamer delivers precise bore finishing to ISO H5 tolerance

The notch-free tapered neck design further reduces the risk of breakage

Exact NoGo sizing for reliable inspections: Provides a precise maximum material condition check for M55 x 2 fine-pitch threads

Weldon-flat Tool Compatibility: Specifically designed to securely hold end mills

it provides reliable chip control in reaming operations and is suitable for steel

JBO Thread Plug Gauge - UNJF Go-No/Go - Right Hand - 3B - No. 12 x 28 Widin New 76 mm taper-shank reamer deliversThe JBO Thread Plug Gauge is a precision UNJF Go No Go tool designed to verify threaded holes to exact Unified Thread standards. Specifically oriented for right handed threads, this 3B class gauge in No. 12 x 28 size provides a reliable, quick check during manufacturing, assembly, and inspection across industries such as automotive, aerospace, and general machining. With its go no go design, you can instantly confirm whether a hole meets