Feature(may vary by option.)

●Product Name : Starlock Washer;Material : Metal
●Weight: 25g; Package Content: 30 x Starlock Washers
●Thickness: 0.5mm/0.02"; Mounting type: Internal gear washers
●Shaft diameter: 8 mm / 0.3 inches; outer diameter: 18 mm / 0.7 inches
●Colour: black

[8mmx18mm 30]

Description

A lock washer exerts a spring force between the head of the fasteners and the substrate, keeping the washer firmly against the substrate and the screw thread firmly against the nut or underground thread, creating more friction and turning resistance.
These washers create a permanent installation and locks onto plastic, steel, etc.