Features 1、Purpose: used with bolts or screws screwed together for fastening parts, 2、This knurled nut is an element that must be used in all manufacturing machinery 3、Convenient to replace the broken one 4、Adopts of premium carbon steel material, and combines with the treatment of Nickel plating, Enhancing oxidation resistance, more durable. 5、M4 M5 M6 M8 M10 Multiple specifications are available Specification Features: Purpose: used with bolts or screws screwed together for fastening parts, This knurled nut is an element that must be used in all manufacturing machinery Convenient to replace the broken one Adopts of premium carbon steel material, and combines with the treatment of Nickel plating, Enhancing oxidation resistance, more durable. M4 M5 M6 M8 M10 Multiple specifications are available Specification: Material:Carbon steel (Nickel plating) Weight: Approx.17g/0.6oz Size D dk M4 4mm 12mm M5 5mm 16mm M6 6mm 20mm M8 8mm 24mm M10 10mm 30mm Package list: Package List