... 4.prompt delivery 5.non-standerd parts Item Nocross recess head screwsMaterialsiron,aluminum,steel,copper,plastic,carbon steel,nylon,bronze,solder ... ,measuring machine,projection machine,roughness tester,hardness test and so on.PaymentT/T 50% deposit in advance,50% T/T before ... we receive your valued enquiries with detail specification. cross recess head screws