Butterfly nuts,fastener 1)Standard:DIN315(American Form) 2)Size:M3 ... heading 4)Mild steel,SUS304,brass Feature:1) Standard of butterfly nuts: DIN315 (American Form)2) Size: M3 to M12, 1 ... , brassOuter packing: Carton or poly bag + Pallet our company supply butterfly nuts,wing nuts,fasteners. mm Thread size M3M4M5M6M8M10M12a88911141720m3.33.34 ...