Insize Setting Standard for Screw Thread Micrometer 64-48TPI Series 3281-SP64 Carmex Internal Right Hand UN Unified Thread Turning Insert 18 TPI / 16 IR 18 UN P25C giving you everything you need

giving you everything you need for efficient and professional-grade thread repair

Constructed from stainless steel and equipped with a carbide-tipped scriber

Height – 3” (75 mm)

anti-reverse fastening

600mm length for extended and accurate leveling

Insize Setting Standard for Screw Thread Micrometer 64-48TPI Series 3281-SP64 Carmex Internal Right Hand UN Unified Thread Turning Insert 18 TPI / 16 IR 18 UN P25C giving you everything you needThe Insize 3281 SP64 55 Setting Standard is a precision accessory designed for calibrating and setting screw thread micrometers used for measuring Whitworth and other 55 thread forms. Engineered for high accuracy and repeatable calibration, this setting standard ensures reliable thread pitch diameter measurement in workshop, inspection, and manufacturing applications. Designed for use with compatible Insize screw thread micrometers, the 3281 SP64 is