... :DIN.ANSI/ASME.JIS steel hex socket set screws steel hex socket set screws (detail size) 1diametre range2.0-9.0mm length ... ,brass,aluminum,stainless steel6Surface treatmetnNickel,white/bluezinc,black oxide7Heat treatmentsoft, case harden, Grade4.8,6.8, 8.8, 10.9, 12 ... the client is interesed in this steel hex socket set screws or have any requirement .pls send the picture or drawing ...