Value Collection 30770 Split Lock Washer 1/4 in Silicon Bronze 25pk

Product Description

The VALUE COLLECTION 30770 is a silicon bronze split lock washer sized for 1/4 inch screws and sold in a pack of 25. Split lock washers apply spring tension under a fastener head or nut to resist loosening caused by vibration and thermal cycling. The 30770 is manufactured to ASME B18.21.1 standards, with a nominal inside diameter of 0.252 inches and an outside diameter of 0.487 inches. At 0.062 inches thick, the washer delivers consistent bite and locking force across a wide range of fastener-driven assemblies. Silicon bronze construction provides corrosion resistance in wet, marine, and chemically active environments where steel hardware is not suitable.

This split lock washer is appropriate for general mechanical assembly, marine hardware, plumbing fixture mounting, and electrical panel applications where corrosion resistance and reliable anti-loosening performance are required. The 1/4 inch screw size makes it a common fit across residential and light commercial mechanical systems. Installers working in coastal environments, pool equipment enclosures, or wet utility areas will find the silicon bronze alloy well suited to the conditions. The pack quantity of 25 supports both single-job use and small-inventory bench stock.

Key Features

• Silicon bronze alloy resists corrosion in marine, pool, and wet environments
• Split lock design creates spring tension to resist fastener back-out under vibration
• Meets ASME B18.21.1 fastener standard for dimensional consistency
• Inside diameter range of 0.254 to 0.262 inches accommodates standard 1/4 inch screw shanks
• Outside diameter range of 0.489 to 0.491 inches fits standard counterbored and flush applications
• Sold in a pack of 25 with a minimum order quantity of 1 pack

Compatibility

Designed for use with 1/4 inch screw fasteners in applications requiring an ASME B18.21.1 compliant split lock washer in silicon bronze material.

Installation Notes

Split lock washers are installed by placing the washer flat side down against the mating surface before seating the fastener head or nut. Ensure the split ends bite into both the fastener bearing surface and the work surface when the fastener is torqued. Do not reuse a split lock washer that has been fully compressed flat, as the spring action will not be restored. Installation is performed by any trade requiring corrosion-resistant fastener hardware.