Threading our way to Excellence
BSW/ BSF/ Whits threads are used where clerance between male & female threads is to be controlled. This uses Imperial system of units.
Basic Dimensions- BS 84-2007 & Gauging Practice: BS 919 Part II – 2007.
Thread Plug & Ring Gauges from Diameter 1/8 to 6″ , TPI 40 to 2.5
For more Technical Details download Technical Information sheet from link given below.