Home

BA
BSC
BSF
BSP
BSTP
BSW
CEI
UNC
UNF
ME
BSB

BSP = British Standard Pipe, or BSPP = British Standard Parallel Pipe, or BSPF = British Standard Parallel Fixed.

This thread needs a gasket or seal to be gas/liquid tight.

BSP (British Standard Pipe) Thread Data

Angle of thread = 55o degrees

BSP Thread Profile

 

Nominal Size
(inches)
T P I Pitch
(inches)
Major Diameter
(inches)
Minor Diameter
(inches)
Tapping Drill Size
1/16 28 0.0357 0.304 0.2583 Letter drill G
(6.6 mm)
1/8 28 0.0357 0.383 0.3372 11/32 inch
(8.73 mm)
1/4 19 0.0526 0.518 0.4546 11.8 mm
(0.4646 inch)
3/8 19 0.0526 0.656 0.5886 15.25 mm
(0.6004 inch)
1/2 14 0.0714 0.825 0.7336 3/4 inch
(19.05 mm)
5/8 14 0.0714 0.902 0.8106 21 mm
(0.8268 inch)
3/4 14 0.0714 1.041 0.9496 24.5 mm
(0.9646 inch)
7/8 14 0.0714 1.189 1.0976 28.25 mm
(1.1122 inch)
1 inch 11 0.0909 1.309 1.1926 30.75 mm
(1.2106 inch)

BRITISH TOOLS & FASTENERS, LLC
7696 ROUTE 31, LYONS NY 14489
sales@britishfasteners.com
TEL- 315 946 9400 FAX - 315 946 9344

Sales Terms And Privacy Policy