1/4" BSP General Fuel
-
Tube Cutters - Copper Pipe Tube Cutter 3-16mm 12-03279
Part no: 12-03279Excl. Tax: £12.83 Incl. Tax: £15.40 -
Laser Tools 3483 Pipe Bender 3-in-1
Part no: 3483Excl. Tax: £21.06 Incl. Tax: £25.27
The root diameter is 0.451" and there is 19 T.P.I.
The motoring industry use the outside diameter of the pipe for it's size and for 1/4" BSP you have the options of 5/16" OD or 1/4" OD pipe.
Abbreviations: O.D. Outside Diameter - I.D. Inside Diameter - T.P.I. Threads Per Inch