A2 (304) Stainless Steel Torx and Torx-Plus Screwdriver Bits
Mechanical properties, corrosion behaviour and the full dimensional range for this grade.
A2 Stainless Steel Torx and Torx-Plus Screwdriver Bits 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.
Grade
ISO 3506 group A2 (304 / 1.4301), commonly supplied A2-70
Corrosion resistance
Good general corrosion resistance
Magnetic response
Largely non-magnetic
Service temperature
approx. -200 °C to +400 °C, subject to the property class and the joint
Property values are typical for the grade. Certified mechanical test data is available on request for production orders.
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A2 Stainless Steel is not a material torx and torx-plus screwdriver bits are supplied in. Torx and Torx-Plus Screwdriver Bits are specified by nominal size, and this combination does not describe a part that exists.
Need this fastener tool in a grade that is not listed?
A2 Stainless Steel is one of the grades the catalog describes. A non-standard fastener tool is quoted from the drawing; where one already exists in the catalog, the special is usually a variation on its tooling.
Minimum order from 2,000 pieces; samples within 7 days of drawing approval.
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.
Dimensioned line drawing of T10 Torx and Torx-Plus Screwdriver Bits to ISO 10664 / DIN 3126 C6.3. Side view and top view, drawn to the dimensions in the table below and redrawn for any size selected.
Drive
Torx
Typical mating screw
M3 hexalobular
Service
electronics, appliance
Sends the selected values to the quote form below.
Request a Quote
The form below follows the current technical drawing configuration. Change the drawing values above and the request details update automatically.
Dimensions & Specifications (ISO 10664 / DIN 3126 C6.3)
Third-party video, selected automatically for this topic. It is not produced by Engineering Hardware and is not a specification source — use the tables on this page for dimensional data.
Inside the plant
Manufactured in our own plant
This part is cold-formed, threaded, heat-treated and finished in-house. The stages below are where its class and finish are actually decided.
01
Cold heading
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.
02
Thread rolling
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.
03
Heat treatment
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.
04
Surface treatment
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.
Frequently Asked Questions
What's the service temperature limit for A2 Stainless Steel?
The practical service range is approx. -200 °C to +400 °C, subject to the property class and the joint.
Can A2 Stainless Steel replace plated alloy steel structurally?
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.
Are A2 Stainless Steel Torx and Torx-Plus Screwdriver Bits magnetic?
A2 Stainless Steel Torx and Torx-Plus Screwdriver Bits are largely non-magnetic.
What corrosion resistance do A2 Stainless Steel Torx and Torx-Plus Screwdriver Bits offer?
A2 Stainless Steel Torx and Torx-Plus Screwdriver Bits provide good general corrosion resistance with a service range of approx. -200 °C to +400 °C, subject to the property class and the joint.
How do I request a quotation?
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.
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