High Quality first grade Nylon nut mould factory Standard: DIN,ANSI,BS,GB Diameter:3mm~32mm,1/8"~1-3/4" thread:MM,UNC,UNF,B Product Name : High Quality first grade Nylon nut mould factory Standard Model:DIN ANSI JIS ASTM Product size:M3-M48 1/4"-3" Delivery Date:30day High Quality first grade Nylon nut mould factory