Tapping screws 1.Material:Stainless steel,Carbon steel 2.Surface:Dacromet plated, ... .2-ST6.3Surface: plainStandard: DIN, ANSI, JIS, BSscrew slot form:philips,phil-slot,pozi,hexsocket,six-lobe,square,triangle,slotted.Terms ... without any hesitationContactMike fax:86-0311-87816858 Packing: cross recessed pan head tapping screws