M6 copper screw nut plastic 57mm four star lock knob /female knob

Material: nylon+copper
Dia: 57mm
Thread : M6
Plastic part high: 28mm Type: angular four star plastic head

Company

We are China manufacture and factory for plastic

 hardware parts like castor, adjust feet, pipe plug/tube protector, selfie stick etc.

The knob can be used for furniture hardware parts or sport equitment or machine parts etc.
1.  The knobs can be changed to female or male knob , and thru-hole or not . Also the male knob thread lenght
 also can be changed.        
2..offer the star type knob as T/WING knob, three lnob knob, four arm/star knob,five star knob,six lobe knob.
3.the size and type can be customed as your requirement,such as zinc-plated plastic knobs, with matt or without matt!