nylon nuts and bolts mould Standard: DIN,ANSI,BS,GB Diameter:3mm~32mm,1/8"~1-3/4" thread:MM,UNC,UNF,BSW Grade: 6 / 8 Product Name : nylon nuts and bolts mouldStandard Model:DIN ANSI JIS ASTM Product size:M3-M48 1/4"-3" Delivery Date:30day Nylon Nut mould/nylon insert lock nut moulding/nylon nuts and bolts mold