BP SERIES

Will Fit Following Holders:

Form Rol
OR-BH-BP
OR-BH-BPS
And For Swiss Automatics

1/8" Hole

5/32" Wide

CIRCULAR PITCH KNURLS

Equivalent Normal TPI
Of Diametral Pitch Knurls

All Diametral Pitch Knurls made to American Standards (ASA B5.30 1958).  Diametral Pitch Knurls produce the D.P. number of teeth per inch of
diameter.  Rolled Circular Pitch Knurls, produce the TPI number of teeth per inch of circumference measured normal to the teeth.