Material:Steel.Stainless steel 1.4305 (AISI 303 equivalent).Version:Steel black oxidized.Stainless steel bright.Note:These washers are used together with DIN EN ISO 2009 or DIN EN ISO 10642 countersunk screws on the end of shafts with keyways to secure handwheels and crank handles.The washers can be used with the handwheels K0671, K0160, K0161, K0162, K0163, K0164, K0165.The steel washers are often used as caps for magnets.Drawing reference:D3 = for countersunk screw ISO 2009 and ISO 106421) countersunk screw ISO 2009 and ISO 106422) washer3) handwheel4) shaft