M8 Flat Round Sampson Washer 38-45HRC Plain

Built for trade and industrial fastening, Flat Round Sampson Washer 38-45HRC Plain spreads clamping load under bolted joints, prevents pull-through on soft substrates and oversized holes, and suits roofing, cladding, plumbing and general workshop assembly. Used across general load spreading, soft substrate assemblies, roofing and cladding, plumbing and electrical fixing, and workshop bolted joints. The Hobson plain washer range covers mudguard, supa, large flat round and standard variants across plain, zinc plated, hot dip galvanised and 316 stainless finishes. Manufactured to recognised engineering standards. Designed for consistent load-spreading performance.