nylon nuts and bolts moulds Mold Standard: DIN,ANSI,BS,GB Mold thread:MM,UNC,UNF,BSW Mold Grade: 6 / 8 Product Name : nylon nuts and bolts mouldsStandard Model:DIN ANSI JIS ASTM Product size:M3-M48 1/4"-3" Delivery Date:30day Nylon Nut mold/nylon insert lock nut moulds/nylon nuts and bolts moulds