BRITISH STANDARD WHITWORTH TAP & DIE SET BSW SIZE: 3/16" to 1/2" SET CONSISTS OF : SET OF 3 TAPS & SPLIT DIE OF (OD 1" & 1.1/2") 3/16'' x 24 TPI 1/4" x 20 TPI 5/16" x 18 TPI 3/8" x 16 TPI 7/16" x 14 TPI 1/2" x 12 TPI EMAIL US FOR ANY HARD TO SOURCE TAPS/DIES AND DIE NUTS. EMAIL US FOR ANY QUESTION ? |