Description
WSHR FLAT M3 SS A4 — BOLTON SKU 58905.
About the Flat Washer M3 Stainless Steel A4
This item is a flat washer for M3 fasteners, manufactured in grade A4 stainless steel per the abbreviated designation (WSHR FLAT = flat washer; SS A4 = stainless steel, grade A4). Flat washers spread the clamping load of a screw head or nut across a wider bearing surface, protect the component face from marking and embedding, and help the joint hold its preload. The A4 grade denotes an acid-resistant austenitic stainless steel, generally selected over A2 where exposure to chlorides, salt-laden air or washdown chemicals demands higher corrosion resistance — making A4 washers the natural partner for A4 screws and nuts in marine-influenced or chemically exposed assemblies. The record does not state outside diameter, thickness or the governing dimensional standard, so these are confirmed at quotation; specify your standard preference (for example standard or large series) with the RFQ.
Key specifications
| Type | Flat washer |
|---|---|
| Fastener size | M3 |
| Material | Stainless steel, grade A4 |
Typical applications
A4 stainless flat washers are used with corrosion-resistant fastener sets on equipment operated in coastal, offshore and washdown environments, and across defence, aerospace ground equipment and MRO assembly generally.
Supplied by BOLTON Technical Equipment Supplies against request for quotation. Add this item to your RFQ basket to request pricing, lead time and documentation requirements (e.g. CoC, datasheets or test reports where applicable).
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