Value Collection R63082642 Lock Washer 3/8 Inch Stainless Steel

Product Description

The VALUE COLLECTION R63082642 is a stainless steel external tooth lock washer sized for 3/8-inch screws. It features an inside diameter of 0.398 inches and an outside diameter of 0.692 inches, with a thickness of 0.04 inches. Manufactured from Grade 410 stainless steel, it delivers reliable corrosion resistance and strong tooth engagement to resist loosening under vibration. The external tooth profile bites into both the fastener bearing surface and the mating material, maintaining clamp load in assemblies subject to dynamic loads. Licensed plumbers, electricians, pipefitters, HVAC technicians, and general mechanical contractors install this type of hardware in a wide range of trade applications.

This washer is suited for use in residential and light commercial mechanical assemblies where corrosion resistance is a priority. Typical applications include pipe hangers, electrical junction box mounting, HVAC equipment panels, and structural fastening in humid or outdoor-adjacent environments. The external tooth configuration makes it a standard choice when thread-locking compounds are not preferred and mechanical locking is required. It is sold in minimum order quantities of 100 pieces.

Key Features

• Grade 410 stainless steel construction for corrosion resistance in demanding environments
• External tooth profile provides strong mechanical resistance to loosening under vibration
• 0.398-inch ID sized for standard 3/8-inch fasteners
• 0.692-inch OD with 0.04-inch thickness for consistent bearing surface contact
• Does not meet military specifications — appropriate for standard commercial and trade use

Compatibility

Designed as an OEM-style replacement or standard-service lock washer for 3/8-inch screw and bolt assemblies in trade mechanical, HVAC, plumbing, and electrical applications.

Installation Notes

Install between the fastener head or nut and the mating surface with the teeth facing the fastener bearing surface. Ensure both mating surfaces are clean and free of debris before seating the washer. Tighten fasteners to the specification required by the assembly — do not over-torque, as excessive force can flatten the teeth and reduce locking effectiveness. No special tools are required beyond standard hand or power drive equipment appropriate to the fastener size.