International Organization for Standardization (ISO)
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ISO 8764-1:2004
Scope
This part of ISO 8764 specifies the shapes and dimensions, technical requirements and torque test methods for the tips of hand drivers and of machine-operated bits for cross-recessed head screws.
It specifies two forms of driver tips:
— form PH for form H recesses;
— form PZ for form Z recesses.
H and Z form recesses are specified in ISO 4757.
General requirements, lengths of blades and marking of hand-operated screwdrivers are given in ISO 8764-2.
ISO 8764-1:2004 history
2004ISO 8764-1:2004 Assembly tools for screws and nuts - Screwdrivers for cross-recessed head screws - Part 1: Driver tips
1999ISO 8764-1:1999 Assembly tools for screws and nuts - Screwdrivers for cross-recessed head screws - Part 1: Driver points
1992ISO 8764-1:1992 Screwdrivers for cross-recessed head screws; part 1: driver points