Whitworth Carbon Steel Taps 1st 2nd 3rd Set Whitworth carbon steel taps available individually or as a full 1st, 2nd and 3rd tap set. These hand taps are suitable for British Standard Whitworth / BSW threads and are mainly used for cleaning, chasing and repairing existing internal threads. Choose... £2.30 (Inc. VAT) £1.92 (Ex. VAT) Choose Options Compare