Production range:Productivity:2000000 Pieces per Month Special Brass Knurled Nuts 1. Material: Brass. 2. Size: All size. 3. Machine Technics: Auto Lathe. Special Brass Knurled NutsDetailed Product Description1). Material: Brass.2). Size: All size.3). Machine Technics: Auto Lathe.4). OEM service available. We can produce screws according to customers drawing and samples.5). Packaging: Carton bulk packing, small inner boxes packing, or according to customers requirements.