Industrial 1-1 2-18 UNEF-3B Thread Plug Gauge is a Go/No-Go gauge for the 1-1 2-18 UNEF-3B thread size. The Go size is 1.4639 and the No-Go size is 1.4687, enabling precise verification of threaded components against the specification. This plug gauge supports quality control in manufacturing and inspection processes by quickly confirming whether a hole's threads meet the UNEF-3B tolerance.
