The Phillips drive system (screw recess, driving tool and screw heading
punch) was originally developed by our company's founder, Henry Phillips in
1932. It was manufactured under license from the Phillips Screw Company
until the mid-1960's. The POZIDRIV® system was developed by the Phillips
Screw Company in the mid-1960's as the next generation replacement for the
original Phillips recess and driver system. The POZIDRIV system solved some
of the cam-out problems associated with the Phillips system and worked well
with power tools. Additionally, our company introduced the ACR® PHILLIPS II®
high performance drive system in 1994 which assures trouble free assembly and
repair using hand or power tools.
The Reed & Prince system was developed at the same time as the original
Phillips system in the early 1930's. It is also known as the "Frearson"
drive system after the original inventor. The "cross recess" referred to in
many European standards can be either the Phillips system or the POZIDRIV
system. The two are differentiated by the additional letter designations (PH
or H for Phillips and PZ or Z for POZIDRIV) contained in the standard.
PHILLIPS SCREW COMPANY
Last updated on 29 July 1999.