Mechanical properties, corrosion behaviour and the full dimensional range for this grade.
A2 Stainless Steel Confirmat Furniture Screws 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.
Hidden Deck Fasteners Sourcing: Manufacturing, Types & Material Compatibility
For confirmat furniture screws in A2 Stainless Steel, the controlling selection factors are corrosion exposure, strength requirement and service temperature. The grade data for A2 Stainless Steel (ISO 3506 group A2 (304 / 1.4301), commonly supplied A2-70) is summarized below together with every size supplied.
Why Choose A2 Stainless Steel for Confirmat Furniture Screws
The most common stainless group for indoor and general outdoor fasteners. For confirmat furniture screws, this matters when good general corrosion resistance is the primary requirement.
Mechanical & Physical Properties
Grade designation
ISO 3506 group A2 (304 / 1.4301), commonly supplied A2-70
Magnetic response
Largely non-magnetic
Service temperature
approx. -200 °C to +400 °C, subject to the property class and the joint
Corrosion characteristic
Good general corrosion resistance
Corrosion Behavior in Service
A2 (304) gives excellent atmospheric and most-water corrosion resistance and is the most common stainless for Confirmat Furniture Screws in indoor and general outdoor service. In chloride-bearing environments (marine air, road salt, swimming pools) consider stepping up to A4 (316).
Galvanic & Galling Considerations
Two important notes for stainless confirmat furniture screws: (1) stainless can gall on stainless threads under load — use a thread lubricant or anti-galling compound, especially for M6 and below; (2) when joined to aluminum or galvanized steel, stainless can drive galvanic corrosion of the less-noble metal in wet service — isolate with a coating or sleeve where appropriate.
Using Stainless Fasteners in Aluminum
Expect the aluminum to corrode, not the fastener — stainless sits higher in the galvanic series, so the aluminum is the one that gives up material. A small fastener in a thick section spreads the loss over a large area and is usually fine; a large fastener in thin sheet concentrates it and is not. Keep water out of the joint, or isolate the two metals with a nylon or coated washer and a sealant.
Sizes of Confirmat Furniture Screws Available in A2 Stainless Steel
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Sends the selected values to the quote form below.
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Dimensions & Specifications (Trade series (confirmat furniture screws))
Flat-pack manufacturingHex or Pozidriv options suit production and field assembly.
Furniture repair30–70 mm lengths cover common panel thickness combinations.
Particleboard furnitureConfirmat screws clamp board joints with a large-diameter body.
Energy & infrastructureTower, pipework, switchgear and plant fixings specified for long service life and inspectable joints.
Maintenance & MROStocked replacements matched to an existing property class, thread and finish.
Typical applications
matching the 5 or 7 mm body to the pilot hole
selecting 30–70 mm length from the panel stack
using the supplied hex or Pozidriv drive
joining particleboard or MDF with a prepared pilot hole
bolting brackets, motors and gearboxes to a frame
assemblies that are dismantled for service and re-torqued
Service conditions to specify against
Marine and coastal
Available in A4 (316) stainless for chloride exposure — coastal structures, pool halls, water treatment and deck hardware, where A2 will eventually pit.
High load
Supplied in ISO 898-1 property classes, so the joint can be designed to a stated proof load and tightened to a calculated torque rather than by feel.
Torque and preload
The joint is designed around bolt tension, so lubrication, coating and the friction coefficient all change the torque figure — state them together.
Where to use something else
Do not use a confirmat without the specified pilot hole; the large body can split the board.
Do not use a machine thread into unthreaded sheet or timber; use a tapping screw, rivet nut or insert made for that parent material.
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 Confirmat Furniture Screws magnetic?
A2 Stainless Steel Confirmat Furniture Screws are largely non-magnetic.
What corrosion resistance do A2 Stainless Steel Confirmat Furniture Screws offer?
A2 Stainless Steel Confirmat Furniture Screws 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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