Insize American Standard Thread Ring Gauge 1 1/4-8UN Class 2A GO Series 4121-1G58 128 mm Length Capacity: 2 tonnes (2000 kg)

Capacity: 2 tonnes (2000 kg)

Shank Length: 30mm

these precision steel balls are ideal for workshop measurement

Precision Fine Threading – For components requiring tight tolerance and smooth thread engagement

Insize American Standard Thread Ring Gauge 1 1/4-8UN Class 2A GO Series 4121-1G58 128 mm Length Capacity: 2 tonnes (2000 kg)The Insize 4121 1G58 American Standard Thread Ring Gauge is a precision GO thread gauge designed for accurate inspection and verification of external Unified threads. Manufactured to ANSI ASME B1. 2 standards, this high precision ring gauge is ideal for machining, production inspection, and quality control applications requiring reliable thread checking. Designed for Class 2A thread inspection, the gauge ensures consistent verification of thread