150pcs Internal Tooth Star Lock Washers Assortment Kit 7 Sizes M3 M4 M5 M6 M8 M10 M12 Push on Locking Washers Quick Speed Star Nut Locking Clips Fastener
Feature:
1. It is made of high-quality materials and has a long service life;
2. Easy to use, all washers are packed in a strong transparent plastic box for easy access.

Specification:
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 rotation resistance

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

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

Note:
There may be slight size deviations due to manual measurement, different measuring methods and tools.
The picture may not reflect the actual color of the item because of different photographing light, angle and display monitor.