Lock Washers Serrated External BZP M10

Serrated external lock washers in M10 size, finished in bright zinc plated (BZP) for corrosion resistance. These washers feature sharp serrations that bite into surfaces to prevent fastener loosening under vibration and movement. Ideal for machinery, automotive applications, and general engineering work where secure fastening is essential. The external design sits outside the bolt head for maximum grip and holding power.