Value Collection SEIWIS0250USA-100BX Lock Washer 100 Pack

Product Description

The VALUE COLLECTION SEIWIS0250USA-100BX is a combination internal and external tooth lock washer designed for use with 1/4 inch screws. Made from Grade 2 steel with a zinc-plated finish, this washer provides corrosion resistance and reliable locking action in bolted assemblies. The internal-external tooth design grips both the fastener head and the mating surface simultaneously, reducing the risk of loosening under vibration or dynamic load. With an inside diameter of 0.267 inches and an outside diameter of 0.76 inches, it is sized for standard 1/4 inch fastener applications. This SKU is sold in a box of 100 washers. Electricians, HVAC technicians, plumbers, and general mechanical trades commonly use this style of washer in panel, bracket, and equipment mounting work.

This lock washer is suited for residential and light commercial applications where a standard 1/4 inch fastener is used to secure electrical enclosures, HVAC equipment panels, plumbing brackets, or similar structural components. The zinc plating makes it appropriate for indoor and moderately exposed environments. It does not meet military specifications. The 100-piece minimum order quantity makes this pack well-suited for service shops and contractors who maintain a general fastener inventory.

Key Features

• Internal and external tooth configuration grips both fastener head and mounting surface for dual locking action
• Grade 2 steel construction provides reliable mechanical strength for general-purpose fastening
• Zinc-plated finish adds corrosion resistance for indoor and lightly exposed applications
• 0.267 inch inside diameter sized for standard 1/4 inch screws and bolts
• 0.04 inch thickness fits standard fastener stack-up requirements
• Sold in a 100-piece box for shop stock and service inventory use

Compatibility

Designed for use with 1/4 inch screws and bolts in general mechanical, electrical, HVAC, and plumbing fastening applications where an internal-external tooth lock washer is specified.

Installation Notes

Install with the serrated teeth contacting both the underside of the fastener head and the workpiece surface to achieve proper locking engagement. Power down or de-energize any electrical equipment before installing or removing fasteners in electrical enclosures. Use appropriate hand tools and follow applicable codes such as the NEC for electrical panel work. Do not reuse lock washers that have been fully compressed, as the teeth may no longer provide adequate grip.