JBO Thread Plug Gauge - Metric Fine Go/No-Go - Left Hand - 6H - M4 x 0.5 Hydraulic Expansion Chucks Featuring a 12mm diameter

Featuring a 12mm diameter

Size: 2 mm diameter x 14 mm length

Length: Short overall length for increased rigidity and reduced deflection

it pairs well with standard machining centers and milling machines that accept a 22 mm bore arbor

speed capability

JBO Thread Plug Gauge - Metric Fine Go/No-Go - Left Hand - 6H - M4 x 0.5 Hydraulic Expansion Chucks Featuring a 12mm diameterThe JBO Thread Plug Gauge is a precision inspection tool designed for metric fine threads, specifically tuned for left hand M4 x 0. 5 holes with 6H tolerance. It's ideal for engineers, machinists, quality teams, and hobbyists who need reliable, repeatable thread acceptance to ensure components fit together correctly. With a robust Go No Go design, the gauge lets you perform fast, repeatable checks of threaded holes, speeding up setup and reducing