ptapsThe standard material for a BSP tap is a high-speed steel (HSS). The HSS material allows for use in many tough materials. 

P/NDescription
883201/8 – 28 BSP STI PLUG TAP
883211/4 – 19 BSP STI PLUG TAP
883223/8 – 19 BSP STI PLUG TAP
883231/2 – 14 BSP STI PLUG TAP
883245/8 – 14 BSP STI PLUG TAP
883253/4 – 14 BSP STI PLUG TAP
883267/8 – 14 BSP STI PLUG TAP
883271 – 11 BSP STI PLUG TAP