JBO Thread Plug Gauge - Metric Fine Go/No-Go - Right Hand - 6H - M28 x 0.75 Boring Bar Blank 4-flute variable-index design for stability:

4-flute variable-index design for stability: 29° and 31° helix angles reduce chatter

Its robust construction supports consistent results across a range of materials and applications

helping maintain hole size and extend tool life across demanding reaming tasks

The durable construction

ensuring you get the tool you need with predictable lead times

JBO Thread Plug Gauge - Metric Fine Go/No-Go - Right Hand - 6H - M28 x 0.75 Boring Bar Blank 4-flute variable-index design for stability:The JBO Thread Plug Gauge is a precision tool designed for metric fine threads (M28 x 0. 75) in the 6H tolerance class. Perfect for inspectors, machinists, and assembly technicians, it helps verify threaded holes quickly and with confidence. The knurled, easygrip body and threaded ends provide simple handling for repetitive use in busy shops. Go No Go testing is built in to deliver fast, decisive checks of hole threads, helping you confirm proper