Mechanical properties, corrosion behaviour and the full dimensional range for this grade.
A2 Stainless Steel Cross-Recess Screwdriver Bits (PH / PZ) are supplied to ISO 3506 group A2 (304 / 1.4301), commonly supplied A2-70. Corrosion behaviour is good general corrosion resistance, the material is largely non-magnetic, and the usable service range is approx. -200 °C to +400 °C, subject to the property class and the joint. In practice this grade is the most common stainless group for indoor and general outdoor fasteners.
Property values are typical for the grade. Certified mechanical test data is available on request for production orders.
A2 Stainless Steel is not a material cross-recess screwdriver bits (ph / pz) are supplied in. Cross-Recess Screwdriver Bits (PH / PZ) are specified by size designation, and this combination does not describe a part that exists.
See the Cross-Recess Screwdriver Bits (PH / PZ) product page for the specifications that do apply →
Customize the parameters below — every spec field is editable, and the drawing redraws to match the values you choose. Changing the size will snap the other fields to that size's standard values; you can then override any individual value.
The form below follows the current technical drawing configuration. Change the drawing values above and the request details update automatically.
| Bit | Recess | Typical screw size | Distinguishing mark on the screw |
|---|---|---|---|
| PH0 | Phillips | M2 u2013 M2.5 | plain cross, tapered flanks |
| PH1 | Phillips | M3 u2013 M3.5 | plain cross, tapered flanks |
| PH2 | Phillips | M4 u2013 M5 | plain cross, tapered flanks |
| PH3 | Phillips | M6 u2013 M8 | plain cross, tapered flanks |
| PZ1 | Pozidriv | M3 u2013 M3.5 | cross plus four fine radial ticks |
| PZ2 | Pozidriv | M4 u2013 M5 | cross plus four fine radial ticks |
| PZ3 | Pozidriv | M6 u2013 M8 | cross plus four fine radial ticks |
Select a material class to see the grades we supply it in. Each designation is listed with its ISO/EN, AISI/SAE, JIS and GB equivalents.
What Cross-Recess Screwdriver Bits are specified for, industry by industry. Stocked from PH0 to PZ3 (size designation).
This part is cold-formed, threaded, heat-treated and finished in-house. The stages below are where its class and finish are actually decided.
Wire rod is drawn to size and cold-formed into blanks. Forming rather than cutting keeps the grain flow continuous around the head, which is where a bolt is most likely to fail.
Head dimensions and under-head radius checked at set-up and per shift.
Threads are rolled between hardened dies rather than cut. Rolled threads are stronger in fatigue than cut threads and hold pitch and flank angle far more consistently across a batch.
Go / no-go ring gauges to ISO 965 tolerance class 6g.
Quench-and-temper brings carbon and alloy steel to the property class ordered — 8.8, 10.9 or 12.9 — with the furnace charge tracked so a finished lot can be traced back to it.
Core hardness and tensile tested per lot to ISO 898-1.
Zinc, zinc-nickel, hot-dip galvanizing, black oxide, phosphate and Dacromet, selected against the service environment rather than against the price list.
Coating thickness and neutral salt spray hours to ISO 9227.
A2 (304) is widely accepted for food contact in non-chloride environments; A4 (316) is preferred where chlorides are present.
Yes, but stainless drives mild galvanic corrosion of aluminum in wet service — isolate with a coating, sleeve or paint, or accept the trade-off if the joint is dry and indoor.
The practical service range is approx. -200 °C to +400 °C, subject to the property class and the joint.
Only at the standard strength classes — A2-70 / A4-80 are roughly equivalent to class 7 steel; A4-100 reaches class 8.8. For class 10.9 or 12.9 strength, plated alloy steel is required.
Use the technical drawing on this page to pick the exact configuration, then submit it with the quote form. We respond within one business day.
