Value Collection R63082440 External Tooth Lock Washer

Product Description

The VALUE COLLECTION R63082440 is a No. 8 screw external tooth lock washer manufactured from Grade 410 stainless steel. It features an inside diameter of 0.176 inches and an outside diameter of 0.381 inches, with a thickness of 0.023 inches. The external tooth design bites into the mating surface and fastener head to resist loosening under vibration, torque, and thermal cycling. This washer is suited for use in HVAC equipment assemblies, electrical panels, plumbing fixture mounting, and other mechanical applications where a secure, corrosion-resistant fastener solution is required. Installation is typically performed by licensed trades or maintenance technicians during equipment assembly or field service.

This lock washer is sized for No. 8 screws and is appropriate for use in both residential and light commercial applications. It is commonly used when assembling sheet metal components, securing control boards, mounting electrical enclosures, and fastening hardware in humid or corrosive environments where stainless steel construction provides an advantage over carbon steel alternatives. The external tooth configuration is well suited for softer base materials where maximum locking engagement is needed.

Key Features

• External tooth design provides aggressive locking engagement to resist vibration-induced loosening
• Grade 410 stainless steel construction offers corrosion resistance in damp or outdoor-adjacent environments
• Inside diameter of 0.176 inches fits standard No. 8 screw fasteners
• Outside diameter of 0.381 inches and thickness of 0.023 inches for consistent seating
• Minimum inside diameter of 0.168 inches and minimum outside diameter of 0.365 inches ensure dimensional consistency within tolerance

Compatibility

Designed as a standard external tooth lock washer for use with No. 8 screws in general mechanical, electrical, and HVAC assembly applications.

Installation Notes

Install with the teeth facing the fastener head or mating surface to allow the locking teeth to bite into both surfaces as the fastener is tightened. Ensure the mating surface is clean and free of debris before installation. Avoid reusing lock washers that have been fully compressed, as the teeth lose locking effectiveness after the first torque cycle. No special tools are required beyond a standard screwdriver or nut driver appropriate to the fastener head type.