The #8 External Tooth Lock Washer (Package of 100) is a standard fastening component designed to prevent threaded fasteners (screws and bolts) from loosening under vibration and torque.
Key Specifications & Features
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Size (#8): Fits standard #8 screws and bolts (with a nominal inner diameter matching #8 hardware, approximately 0.164 inches or 4.16 mm).
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External Tooth Design: The serrated teeth project outward from the outer periphery of the washer. When tightened, these twisted teeth bite firmly into the bearing surface of the screw head and the mating material, creating maximum resistance against rotational loosening caused by vibration.
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Material & Finish: Typically manufactured from durable steel with a corrosion-resistant zinc plating for general automotive, marine, and electronic applications.
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Bulk Packaging: Supplied in a convenient pack of 100 pieces, ideal for assembly benches, restoration projects, and shop inventory.
Common Applications
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Automotive & 12V Electronics: Securing ground wires, terminal lugs, and accessory brackets where engine or road vibration is present.
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Electronics & Chassis Assembly: Fastening circuit boards, internal chassis components, and housing panels securely in place.
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General Hardware & Machinery: Preventing mechanical fasteners from backing out in high-vibration environments.
