Description M12 Square Washer – A4 Stainless Steel (40x40mm) This M12 Square Plate Washer – A4 Stainless Steel is designed for use in channel and bracketry systems where a strong, corrosion-resistant washer is essential. Manufactured from A316 marine grade stainless steel, it provides a secure and long-lasting fixing solution for heavy-duty support systems. Key Features: Washer Size: 40mm × 40mm square plate Thickness: 5mm heavy-duty build for structural support Thread Compatibility: Designed for M12 bolt clearance Material: A4 (Grade 316) Stainless Steel – corrosion-resistant for internal and external use Compatibility: Suitable for all Unistrut-type channels – equivalent to P1020 Sold Individually Benefits: Distributes load across a wider surface area for increased stability Ideal for marine, chemical, and industrial applications Provides corrosion protection in coastal or damp environments Matches all M12 stainless bolts, nuts, and bracketry Ordering & Delivery ✔ Trusted UK Delivery – 95% of orders dispatched within 24 hours Most orders arrive within 1–2 working days as standard. Note: Heavy or bulk orders, as well as any special cut length or non-standard products, may take slightly longer to dispatch. For bulk quantities or trade pricing, please call our team on 0121 270 8507. Related Products: M12 Threaded Rod – A4 Stainless Steel M12 Plain Channel Nuts – A4 Stainless View All Stainless Steel Washers
