Whitworth Pipe Fine Thread

Nominal Diameter	Thread Diameter (mm)	Pitch (mm)	Thread Diameter (inches)	Pitch (inches)
BSF 3/16 x 32H	4,762	0,793	3/16	32
BSF 7/32 x 28H	5,556	0,907	7/32	28
BSF 1/4 x 26H	6,35	0,976	1/4	26
BSF 9/32 x 26H	7,143	0,976	9/32	26
BSF 5/16 x 22H	7,938	1,154	5/16	22
BSF 3/8 x 20H	9,525	1,27	3/8	20
BSF 7/16 x 18H	11,112	1,411	7/16	18
BSF 1/2 x 16H	12,7	1,587	1/2	16
BSF 9/16 x 16H	14,287	1,587	9/16	16
BSF 5/8 x 14H	15,875	1,814	5/8	14
BSF 11/16 x 14H	17,462	1,814	11/16	14
BSF 3/4 x 12H	19,05	2,116	3/4	12
BSF 13/16 x 12H	20.637	2,116	3/16	12
BSF 7/8 x 11H	22,225	2,309	7/8	11
BSF 1" x 10H	25,4	2,54	1"	10
BSF 1"1/8 x 9H	28,575	2,822	1"1/8	9
BSF 1"1/4 x 9H	31,75	2,822	1"1/4	9
BSF 1"3/8 x 8H	34,925	3,174	1"3/8	8
BSF 1"1/2 x 8H	38,1	3,174	1"1/2	8
BSF 1"5/8 x 8H	41,275	3,174	1"5/8	8
BSF 1"3/4 x 7H	44,45	3,628	1"3/4	7
BSF 2" x 7H	50,8	3,628	2"	7
BSF 2"1/4 x 6H	57,15	4,233	2"1/4	6
BSF 2"1/2 x 6H	63,5	4,233	2"1/2	6
BSF 2"3/4 x 6H	69,85	4,233	2"2/4	6
BSF 3" x 5H	76,2	5,08	3"	5