Makeblock M4 Plain Washer - 10-Pack

M4 plain washer is generally used together with with M4 bolts and nuts to reduce the pressure intencity and protect the beam surface.

Specifications:

• Type: Plain Washer
• Material: Steel 
• Thickness: 0.4 mm 
• Outer diameter: 9.0 mm 
• Inner diameter: 4.2 mm