Description
DIN 125 Type A / ISO 7089 Plain Washer 16×30 (304) Steel Grade A Normal Series — BOLTON SKU 56537.
About the DIN 125 Type A / ISO 7089
Made to the DIN 125 Type A ISO 7089 washer pattern, this is a normal-series flat washer for M16 fasteners in 304 stainless steel, product grade A, in the 16×30 size recorded on the item. The standard’s M16 dimensions give a 17 mm hole, a 30 mm outside diameter and 3 mm nominal thickness, matching the designation. A plain washer of this series distributes the clamping load of an M16 bolt head or nut over a wider area, protects the surface finish of the clamped part while the fastener is being torqued, and bridges standard clearance holes so the head cannot dig in. In 304 stainless it pairs naturally with A2-grade fasteners, keeping corrosion behaviour consistent through the joint rather than mixing a plated washer into an otherwise stainless assembly.
Key specifications
| Standard | ISO 7089 / DIN 125 Type A, normal series |
|---|---|
| Nominal size | M16 (16×30) |
| Hole diameter | 17 mm |
| Outside diameter | 30 mm |
| Thickness | 3 mm nominal |
| Product grade | A |
| Material | 304 stainless steel |
Typical applications
Normal-series M16 washers sit under bolt heads and nuts throughout structural, machinery and equipment assembly, protecting faces and spreading load. In 304 stainless they serve the same joints as A2 fasteners in general outdoor and industrial service.
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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