Value Collection R63082288 Internal Tooth Lock Washer

Product Description

The VALUE COLLECTION R63082288 is a stainless steel internal tooth lock washer designed for use with 3/8 inch screws. Manufactured from Grade 410 stainless steel, it features an inside diameter of 0.398 inches and an outside diameter of 0.692 inches, with a thickness of 0.04 inches. The internal tooth design bites into the bearing surface of the fastener and the mating material as the fastener is tightened, resisting loosening from vibration and torque. This washer is a standard component used across HVAC equipment assemblies, plumbing connections, electrical panels, and other mechanical systems where fastener retention is required.

This internal tooth lock washer is suited for light to medium-duty fastening applications in both residential and commercial trade work. It is commonly used wherever a standard hex head cap screw or machine screw requires additional locking action at the fastener seat. The 3/8 inch screw size fits a wide range of equipment mounting and panel assembly applications encountered by HVAC technicians, plumbers, and electricians during installation and service work.

Key Features

• Grade 410 stainless steel construction resists corrosion in wet and humid environments
• Internal tooth design locks against the fastener bearing surface to resist vibration-induced loosening
• Inside diameter of 0.398 inches fits standard 3/8 inch fasteners
• Outside diameter of 0.692 inches provides adequate bearing surface coverage
• Thickness of 0.04 inches for low-profile installation clearance

Compatibility

Designed as an OEM-style replacement or standard-service washer for use with 3/8 inch screws and machine bolts in mechanical, electrical, and plumbing assemblies.

Installation Notes

Install with the teeth facing the underside of the fastener head or nut, not against the mating surface, to ensure proper locking engagement. Disengage power or shut off supply lines before servicing any assembly where this washer is being replaced. Use standard hand tools appropriate to the fastener type. Follow applicable NEC, IPC, or IFGC guidelines for the system being serviced.