JBO Thread Plug Gauge - UNEF Go-No/Go - Left Hand - 2B - 5/16 x 32 Power Milling Chucks This end mill helps you

This end mill helps you process mold and die components efficiently

Flute Type: Left-hand spiral flute for efficient chip evacuation during hand reaming

25 is a precision inspection tool designed to quickly verify external threads on metric coarse fasteners and components

Ideal for machinists and workshops needing tight control around 0

Metric fine sizing for M70 x 1

JBO Thread Plug Gauge - UNEF Go-No/Go - Left Hand - 2B - 5/16 x 32 Power Milling Chucks This end mill helps youThe JBO Thread Plug Gauge is a UNEF Go No Go left hand thread gauge designed to verify threaded holes against Unified thread standards. It's ideal for manufacturers, automotive shops, aerospace maintenance, and workshops where fast, reliable thread inspection matters. Its precise design supports accurate measurements of left hand threads, helping ensure every hole accepts the correct fastener and functions as intended. With a go no go design and exact