BSB British Standard Brass

BSB British Standard Brass

BSB British Standard Brass Thread. Used brass tubing. BSB has a 26 TPI pitch through the whole range.

Diameter "	Diameter mm	Tapping Drill Size mm	Pitch mm
BSB 1/8"	3,175	1,923	0,977
BSB 1/4"	5,556	5,098	0,977
BSB 3/8"	9,525	8,273	0,977
BSB 1/2"	12,700	11,448	0,977
BSB 5/8"	15,875	11,448	0,977
BSB 3/4"	19,050	17,798	0,977
BSB 7/8"	22,225	20,973	0,977
BSB 1"	25,400	24,148	0,977
BSB 1 1/8"	28,575	27,323	0,977
BSB 1 1/4"	31,750	30,498	0,977
BSB 1 1/2"	38,100	36.848	0,977