Value Collection SEWCIS0250USA-100BX Lock Washer Box 100

Product Description

The VALUE COLLECTION SEWCIS0250USA-100BX is a zinc-plated, steel external tooth lock washer sized for 1/4 inch screws. It features an inside diameter of 0.267 inches and an outside diameter of 0.454 inches, with a thickness of 0.025 inches. The external tooth design bites into both the fastener bearing surface and the mating workpiece to resist loosening under vibration and dynamic loads. Manufactured to Grade 2 steel standards with a zinc-plated finish for basic corrosion resistance, these washers are a standard hardware consumable used across HVAC, electrical, plumbing, and general mechanical assembly work. This listing covers a box quantity of 100 pieces.

External tooth lock washers in this size range are commonly specified in light-gauge sheet metal assemblies, electrical panel and junction box installations, HVAC equipment mounting, and general equipment fabrication. The countersunk feature accommodates flush or near-flush seating in appropriate applications. These washers are installed by HVAC technicians, electricians, plumbers, and general mechanical trades wherever 1/4 inch fasteners require vibration-resistant retention.

Key Features

• External tooth design bites mating surfaces to resist vibration-induced loosening
• Inside diameter of 0.267 inches fits standard 1/4 inch screw fasteners
• Outside diameter of 0.454 inches with 0.025 inch thickness
• Zinc-plated finish provides basic corrosion resistance for indoor and sheltered applications
• Grade 2 steel construction for standard-duty fastening applications
• Countersunk feature supports flush seating where required

Compatibility

Designed for use with 1/4 inch screw fasteners in standard-duty steel and sheet metal assemblies across HVAC, electrical, and mechanical trade applications.

Installation Notes

Install with the teeth facing the fastener head or nut, not the workpiece surface, to ensure proper locking engagement. Power down or de-energize any electrical assembly before introducing fasteners near live components. Use standard hand tools or a torque wrench appropriate for the fastener grade being used. Follow applicable NEC or equipment manufacturer guidelines when installing fasteners in electrical enclosures or panel boxes.