US Thread Ring Gauge Set: 1/4-20/28 UNC, 3/8-16/24, 5/16-18/24 UNF, Go/No-Go, 2A Standard.

This thread ring gauge set is an essential tool for precision measurement and quality control in threaded components. Designed to meet the 2A standard, it includes gauges for sizes 1/4-20/28 UNC, 3/8-16/24, and 5/16-18/24 UNF. Each gauge features both Go and No-Go rings to ensure consistent thread conformity and accuracy. Ideal for machinists and mechanical engineers, this set allows for reliable inspection of threaded parts to ensure they meet industry standards, enhancing efficiency in various applications. Gauge Type: Gauge Manufacture country: China Instructions included: No