Value Collection SEWCIS0-80USA-100BX Lock Washer 100pk

Product Description

The VALUE COLLECTION SEWCIS0-80USA-100BX is a No. 8 screw external tooth lock washer designed to resist fastener loosening under vibration and dynamic load. Made from Grade 2 steel with a zinc-plated finish, this washer bites into the mating surface and fastener head when torque is applied, creating a mechanical lock. The inside diameter measures 0.177 inches and the outside diameter measures 0.322 inches, with a thickness of 0.021 inches. This 100-piece box is suited for electricians, HVAC technicians, plumbers, and general mechanical trades who need a reliable fastener component in quantity.

External tooth lock washers in this size class are widely used in electrical panel assembly, control box fabrication, sheet metal enclosure work, and light mechanical assemblies. The countersunk feature and external tooth configuration make this washer appropriate for No. 8 screw applications where surface contact area is limited and vibration resistance is required. Zinc plating provides basic corrosion resistance suitable for indoor and protected environments.

Key Features

• External tooth design bites into fastener and mating surface for vibration-resistant locking
• Grade 2 steel construction for standard mechanical strength requirements
• Zinc-plated finish provides corrosion resistance in protected environments
• Countersunk feature accommodates flush or recessed fastener installations
• 0.177 inches ID sized for No. 8 screw applications
• Sold in a 100-piece box for job-site and shop quantity use

Compatibility

Designed as an OEM-style replacement or standard-use external tooth lock washer for No. 8 screw fastener applications in electrical, mechanical, and HVAC assemblies.

Installation Notes

Installation does not require specialized tools beyond standard hand or power drivers. Place the washer between the fastener head and the mating surface before driving the screw. Do not reuse lock washers once they have been torqued, as the teeth deform on first use. Ensure the mating surface is clean and free of coatings that would prevent the teeth from seating properly.