M6 x 24mm Black Stainless Steel Penny Washers Blackened Washer (Pack of 20)

A2 304 STAINLESS STEEL CORE WITH BLACKENED FINISH – RUST RESISTANT & VISUALLY STRIKING Manufactured from A2 304 stainless steel for excellent corrosion resistance, then surface-treated to a deep matt black finish. Unlike painted or zinc-blackened mild steel washers that flake, scratch, and rust the moment the coating is broken, these washers retain their corrosion resistance even if the black finish wears at the contact point. Ideal for any project where appearance matters as much as performance — visible automotive bodywork, dark furniture, signage, garden installations, and architectural detailing. PACK OF 20 — M4 BLACK PENNY WASHERS FOR MULTI-FIXING PROJECTS Each pack contains 20 individual M6 x 24mm black penny washers with the precise outer diameter specified by DIN 9021. A practical quantity for car body and panel repair, caravan and motorhome maintenance, trailer board fixings, roof rack installations, sun sail and pergola anchors, fence post brackets, and any project requiring multiple wide-surface fixings in a discreet matt black finish. DIN 9021 FORM G WIDE-FORM – LARGE 24mm OUTER DIAMETER FOR LOAD SPREADING Manufactured to the DIN 9021 standard, these are large outer diameter "penny" washers (also known as Form G, wide-form, or fender washers). The oversized 24mm contact area spreads bolt clamping force across a wide surface — preventing the bolt head from pulling through soft materials like wood, plastic, plasterboard, sheet metal, fibreglass, or composite panels. Essential for any fixing into thin or fragile substrates where standard form A washers would cut through. VERSATILE – WOOD, METAL, GARDEN, AUTOMOTIVE & MARINE APPLICATIONS The combination of stainless steel corrosion resistance and decorative black finish makes these washers genuinely multi-purpose. Use them with M6 hex bolts, machine screws, threaded rod, or roofing bolts across exterior timber framing, garden trellis and pergola structures, vehicle bodywork and undercarriage, marine hatch and panel fixings, signage and architectural metalwork, and any DIY or trade project where a black washer outperforms standard zinc-plated alternatives both functionally and visually. UNIVERSAL M6 FIT – COMPATIBLE WITH ALL STANDARD M6 BOLTS, SCREWS & RIVETS With a precise M6 inner bore, these penny washers are universally compatible with all standard M6 metric bolts, machine screws, coach bolts, threaded rod, and rivets across all major brands and standards. Pairs perfectly with A2 304 stainless hex bolts, hex flange bolts, button head socket screws, and dome nuts. Available in a full range of sizes from M3 through M10 in 10-pack and 20-pack quantities — browse our complete black penny washer range to find the exact size and quantity for your project.