JBO Thread Plug Gauge - Metric Fine Go/No-Go - Right Hand - 4H - M21 x 1 4 Month Widin repeatable hole finishes with dependable

repeatable hole finishes with dependable performance in production or critical assemblies

The right-hand cutting action paired with a left-hand spiral flute provides stable chip evacuation and steady cutting

it delivers straightforward pass/fail feedback that speeds inspection workflows and reduces guesswork during assembly

Coating: TiAlN (Titanium Aluminium Nitride) for enhanced hardness

improving part fidelity and workflow efficiency

JBO Thread Plug Gauge - Metric Fine Go/No-Go - Right Hand - 4H - M21 x 1 4 Month Widin repeatable hole finishes with dependableThe JBO Thread Plug Gauge is a precision tool designed for metric fine threads. Its Go No Go design lets you quickly verify hole acceptance, helping ensure parts thread together Cleanly and reliably. Ideal for machinists, quality control teams, assembly technicians, and hobbyists working with metric threads, this gauge speeds inspection without sacrificing accuracy. Go No Go Quick Checks for Fast, Confident Acceptance: Clearly defined Go and No Go