... )Material:Iron,stainless steel,copper and etc.. 2)size:it's up to the clients 3)Standard :DIN,JIS ISO ,BS ... head,oval head,H.W.H head,H.WF head,C.S.K head ,truss head. 6)Head recess: philips ,square ,H ... , 7)Packing:Carton and pallet or according to the customer's requirement. 8)MOQ:30000pcs Accept your design and OEM,We ...