Insize American Standard Thread Ring Gauge 1 1/4-8UN Class 2A GO Series 4121-1G58 128 mm Length and installation use

and installation use

Part No: 3205-900

providing excellent wear resistance and toughness

Max RPM: 2500

Insize American Standard Thread Ring Gauge 1 1/4-8UN Class 2A GO Series 4121-1G58 128 mm Length and installation useThe 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