Bordo 3/8" x 20 BSF 1" Chrome Button Die Carmex Internal ISO Threadmill Insert 30mm/ 4.0mm Range: 60-300mm

Range: 60-300mm

rounded edge shaping

and long tool life for both general-purpose and precision machining

Designed with a cutting diameter of 9

Supplied with a Insize manufacturer inspection certificate

Bordo 3/8" x 20 BSF 1" Chrome Button Die Carmex Internal ISO Threadmill Insert 30mm/ 4.0mm Range: 60-300mmThis 3 8" x 20 BSF Chrome Button Die is designed for forming, repairing, and restoring British Standard Fine (BSF) external threads. Its fine pitch profile provides strong thread engagement and improved resistance to stripping, making it suitable for precision mechanical applications and classic machinery maintenance. Key Features: Thread Standard: British Standard Fine (BSF), featuring a finer pitch than the British Standard Whitworth (BSW) system.