Specification summary of DIN 3126 as applied to cross-recess screwdriver bits (ph / pz): the dimensions the standard fixes, the full size range supplied, and the related designations commonly cross-referenced.
DIN 3126 — Scope
The table below lists the dimensions catalogued for cross-recess screwdriver bits (ph / pz) under DIN 3126. The scope of DIN 3126 itself is not summarised here — where a figure matters, confirm it against the published document.
Tolerance & Product Grades
Product grade is a concept from dimensional fastener standards and does not apply to DIN 3126. Tolerances for this part are the limits shown against each dimension in the table.
Dimensions Specified by DIN 3126
| Bit | Recess | Typical screw size | Distinguishing mark on the screw |
|---|---|---|---|
| PH0 | Phillips | M2 – M2.5 | plain cross, tapered flanks |
| PH1 | Phillips | M3 – M3.5 | plain cross, tapered flanks |
| PH2 | Phillips | M4 – M5 | plain cross, tapered flanks |
| PH3 | Phillips | M6 – M8 | plain cross, tapered flanks |
| PZ1 | Pozidriv | M3 – M3.5 | cross plus four fine radial ticks |
| PZ2 | Pozidriv | M4 – M5 | cross plus four fine radial ticks |
| PZ3 | Pozidriv | M6 – M8 | cross plus four fine radial ticks |
Equivalent Standards
Where direct equivalents exist (ISO ↔ DIN, ISO ↔ ASME), they are listed on the parent Cross-Recess Screwdriver Bits (PH / PZ) page.
Always confirm against the dimensions on this page, since some "equivalent" standards differ in tolerances and head geometry.
Companion Standards
A complete specification for cross-recess screwdriver bits (ph / pz) normally cites several documents: one for the geometry, one for the material or mechanical properties, and one for the finish. DIN 3126 is one of them, not all of them.
Custom manufacturing · Made to drawing
Need a fastener tool to this standard in a non-standard size?
Parts built to DIN 3126 are already in the catalog, so a special is usually a variation on existing tooling rather than a new design — which is what keeps the cost down.
Minimum order from 2,000 pieces; samples within 7 days of drawing approval.
