Hexagon flanged nuts Quaranteed quality with competitive price OEM and ODM orders are welcome jim at dghtjd dot com Material: Iron, carbon steel,stainless steel, copperColor: Zinc plated, black, plain, black phosphatedHead Type:Flat , pan, truss, hexagon,oval,button,cheese,fillister,six-lobeRecess: Phillips, slotted,cambo, pozi