... 2007 ,Website:http://www.nbzhencheng.com, main have self-drill screw , drywall screw , wood screw , slef tapping screw , machine screw , chipboard screw . Variety of complete kinds , reliable quality , compeitive ... FastenerApplication:BuildingPackaging Details:Small box, carton, pallet, nylon bag, for self drilling screwProduct Description1. Grade: C10222. Size: ST3.5, ST3.9,ST4 ...