Product color: black
Product material: 65 manganese steel
Surface treatment: black anodized
Scope of application: widely used for shock absorption and insulation in machinery, furniture, electrical appliances, electronic equipment, automobiles, sports equipment, and industrial production
Product function: The lock washer exerts an elastic force between the head of the fastener and the base material to generate greater friction and rotational resistance.

Size:
M2.5*8mm: inner diameter 2.5mm, outer diameter: 8mm
M3*9mm: inner diameter 3mm, outer diameter: 9mm
M4*12mm: inner diameter 4mm, outer diameter: 12mm
M5*14mm: inner diameter 5mm, outer diameter: 14mm
M6*16mm: inner diameter 6mm, outer diameter: 16mm
M8*18mm: inner diameter 8mm, outer diameter: 18mm
M10*20mm: inner diameter 10mm, outer diameter: 20mm
M12*25mm: inner diameter 12mm, outer diameter: 25mm

3/32" x 5/16": inner diameter 3/32", outer diameter: 5/16"
1/8" x 23/64": inner diameter 1/8", outer diameter: 23/64"
5/32 x 1/2": inner diameter 1/8", outer diameter: 1/2"
3/16" x 9/16": inner diameter 3/16", outer diameter: 9/16"
1/4" x 5/8": inner diameter 1/4", outer diameter: 5/8"
5/16" x 23/32": inner diameter 5/16", outer diameter: 23/32"
3/8" x 3/4": inner diameter 25/64", outer diameter: 3/4"
1/2" x 1": inner diameter 1/2", outer diameter: 1"

Example Sizing:
For a 1/4" diameter shaft/axle, use a 1/4" x 5/8": inner diameter 1/4", outer diameter: 5/8" Starlock washer.
For a 5mm diameter shaft/axle, use an M5*14mm: inner diameter 5mm, outer diameter: 14mm Starlock washer.


Safety Notice:
They are small parts, please keep away from children.