The protruding hub of EN 570.1 crank handles ensures an accurate square bore due to the machined hub face. The link between the crank handle square bore and the square shaft can be made by having a retaining washer and screw, a set screw, or a cross hole for a dowel pin.
Resistant to solvents, oils, grease and other chemical agents.
Technopolymer (Polyamide PA)
Special glass fiber reinforced
Temperature resistant up to 195 °F (90 °C)
Black, matte finish
Steel, blackened finish, molded-in
Threaded bushing to accept
the revolving handle
Revolving handles GN 598