JBO Thread Plug Gauge - Metric Coarse Go/No-Go - Left Hand - 5H - M1.2 x 0.25 Hex Key Drill Chuck while the H5 tolerance ensures

while the H5 tolerance ensures tight

Carbide Durability for Long Tool Life: Built from carbide to resist wear and provide extended tool life across multiple materials

It features a left-hand spiral flute and right-hand cutting with a straight shank for controlled manual operation

it resists wear through repeated use

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

JBO Thread Plug Gauge - Metric Coarse Go/No-Go - Left Hand - 5H - M1.2 x 0.25 Hex Key Drill Chuck while the H5 tolerance ensuresThe JBO Thread Plug Gauge is a precision Go No Go tool designed specifically for metric coarse threads. Its ideal for engineers, machinists, quality teams, and shop technicians who need fast, reliable verification that threaded holes meet spec for proper fit and function. This left hand version is sized for M1. 2 x 0. 25 with a 5H tolerance, helping you confirm correct engagement in assemblies that use left handed threads. Go No Go verification for