... can use other materials accordingto customer's demand .ThreadType "M","UNC","UNF","BSW"thread are available.Head typeHexagon head,Mushroom ... wood...2)Main export market:North America,South America,Eastern Europe,Asia,Western Europe .3)Service:OEM service offered,Design service offered.4 ... ,small order will be full payment .6)Shipment:By truck,by air,by sea..Thanks for clicking our products!Welcome ...