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

P/NDescription
866171/4 – 26 BSF STI PLUG TAP
866195/16 – 22 BSF STI PLUG TAP
866213/8 – 20 BSF STI PLUG TAP
866237/16 – 18 BSF STI PLUG TAP
866261/2 – 16 BSF STI PLUG TAP
866305/8 – 14 BSF STI PLUG TAP
866323/4 – 12 BSF STI PLUG TAP
866347/8 – 11 BSF STI PLUG TAP
866361 – 10 BSF STI PLUG TAP