Value Collection KP86829 External Tooth Lock Washer 100 Pack

Product Description

The VALUE COLLECTION KP86829 is a 4 screw external tooth lock washer manufactured from Grade 410 stainless steel. External tooth lock washers grip mating surfaces through serrated teeth that bite into the fastener bearing face and the substrate, resisting loosening caused by vibration and torque. With an inside diameter of 0.123 inches and an outside diameter of 0.26 inches, this washer is sized for 4 screw applications. The 0.019 inch thickness keeps the profile low while maintaining adequate spring tension. This washer is sold in a package quantity of 100. Electricians, plumbers, HVAC technicians, and general mechanical contractors use hardware of this type throughout equipment assembly and structural fastening work.

External tooth lock washers in this size range are used across a wide variety of light-duty mechanical and electrical fastening applications. They are commonly installed under screw heads or nuts on panels, junction boxes, HVAC equipment housings, plumbing brackets, and similar assemblies where vibration resistance is needed. The stainless steel construction makes this washer suitable for both indoor and corrosion-exposed environments where carbon steel hardware would be inappropriate. The package of 100 supports bench stock and service van inventory for technicians who regularly perform equipment assembly or repair work.

Key Features

• Grade 410 stainless steel construction resists corrosion in damp and mildly corrosive environments
• External tooth design bites into fastener and substrate to resist vibration-induced loosening
• 0.123 inch inside diameter fits 4 screw fasteners
• 0.019 inch thickness maintains low profile under fastener head
• Package of 100 supports bench stock replenishment and field service inventory

Compatibility

Designed as an OEM-style replacement or general-purpose external tooth lock washer for 4 screw fastener applications across HVAC, electrical, plumbing, and general mechanical assemblies.

Installation Notes

Install with the teeth facing the fastener bearing surface so the serrations engage both the fastener and the mating material when torqued. Power down or de-energize any electrical panel or equipment before disassembling fastened assemblies. Use appropriate hand tools and follow applicable codes such as the NEC for electrical enclosure work. Do not substitute this washer for applications requiring military-specification hardware, as this part does not meet military specifications.