Value Collection 93804 External Tooth Lock Washer No 10 100pk

Product Description

The VALUE COLLECTION 93804 is a stainless steel external tooth lock washer sized for No. 10 screws. It features an external tooth profile that bites into the mating surface and fastener head to resist loosening from vibration and torque. Made from Grade 410 stainless steel, the washer delivers corrosion resistance and hardness suitable for demanding mechanical and electrical assembly applications. With a 0.204-inch inside diameter and 0.025-inch thickness, this washer seats cleanly under standard No. 10 fastener heads. Each package contains 100 washers. Licensed tradespeople and maintenance technicians working on HVAC equipment panels, electrical enclosures, and plumbing fixtures commonly use this style of hardware.

External tooth lock washers in this size are well suited for panel assembly, equipment mounting, and control board installation work where fastener retention is critical. The No. 10 screw size is common in residential and light commercial HVAC cabinets, electrical junction boxes, and motor mounting applications. This Grade 410 stainless version is appropriate for environments where mild corrosion resistance is required alongside reliable locking performance. The 100-count package suits service technicians and contractors who install or service multiple units.

Key Features

• External tooth design bites into mating surfaces to prevent fastener back-out under vibration
• Grade 410 stainless steel construction for corrosion resistance and surface hardness
• 0.204-inch inside diameter sized for No. 10 screws
• 0.025-inch thickness provides consistent seating under fastener head
• 0.41-inch outside diameter for broad surface contact
• 100-count package supports multi-unit service work

Compatibility

Designed as an OEM-style replacement or service-stock lock washer for No. 10 screw fastener applications in HVAC, electrical, and mechanical assemblies.

Installation Notes

Installation requires no special tools beyond standard hand or power drivers. Place the washer on the fastener shank with the teeth facing the mating surface before seating the screw. Power down any electrical panel or equipment before working on fastened assemblies inside enclosures, in accordance with applicable NEC lockout-tagout procedures. Do not reuse lock washers that have been fully compressed, as the tooth engagement will not be reliable on reinstallation.