Thread Gauges UNC / UNF / UNEF ANSI B1.2 & BS 919 | ULTRA Shop

Buy thread gauges for UNC (No 1 to 4"), UNF (No 0 to 1 1/2") & UNEF (No 12 to 1 11/16") according to ANSI B1.2 / BS 919 online. ULTRA plug & ring gauges.

Thread gauges for American Unified National threads (UNC, UNF, UNEF) according to ANSI B1.2 and BS 919 ensure reliable go/no-go inspection of cylindrical imperial threads. Particularly in export-oriented mechanical engineering, the automotive industry, and aerospace technology, these precision instruments guarantee exact compliance with flank profiles and interchangeability specifications for the North American market. You receive these wear-resistant thread limit plug gauges, thread go ring gauges, and thread no-go ring gauges from the premium ULTRA brand, manufactured from high-grade, hardened gauge steel for maximum tool life. All gauges guarantee traceable calibration through optional factory or DAkkS certificates for your quality assurance.