Flat Washers Form A M3–M12 — A2 Stainless DIN 125

Why choose these A2 Form A flat washers

Form A flat washers are the standard general-purpose washer for metric bolted joints — a bearing face wider than the bolt head spreads load and protects the surface beneath. Pressed from A2 (304) stainless steel to DIN 125, they resist corrosion in interior, workshop and general outdoor use. For salt water, coastal or chloride-rich environments, our matching A4 316 marine grade washers are the right choice.

Sizes available

Seven metric bores to DIN 125: M3, M4, M5, M6, M8, M10 and M12. Use the dropdown to choose the size and pack you need.

Typical uses

General workshop and trade repairs, machinery brackets and guards, garden furniture and outdoor metalwork, electrical enclosures, bicycle and motorcycle fittings, signage, and any metric bolted joint where load needs spreading or the surface needs protecting.

How to fit

Place the washer under the nut or the bolt head with the flat face against the workpiece. Form A is the standard medium-thickness washer — step up to a thick DIN 7349 washer or a large-OD DIN 9021 penny washer where more load spread is needed. A light residual oil from manufacture can be wiped off before final assembly.

Delivery

Same-day dispatch on orders placed before 2pm — free UK delivery on orders over £20.