
More delivery methods in checkout
Return this item within 7 days of purchase.
Get an immediate answer with AI
AI-generated from the text of manufacturer documentation. To verify or get additional information, please contact customer service.
Keeping bolts and screws secure in vibrating or high-stress applications is essential, and these Split Lock Washers do exactly that.
![]()
This pack contains 25 high-quality split lock washers designed for 7/16 inch screw size.

They're made from steel with a black oxide finish for good corrosion resistance and a clean appearance.

Each washer has an inside diameter of 0.44 inches, outside diameter of 0.644 inches, and thickness of 0.14 inches.
They meet dimensional standards ASME B18.21.1 and have a Rockwell Hardness of C46.
These are perfect for mechanical assemblies, automotive repairs, machinery maintenance, and general construction projects where you need extra security against loosening.
The split design creates tension that helps maintain clamping force even under movement or vibration.

Users often appreciate the reliable performance and consistent sizing that makes installation straightforward.
![]()
Whether you're a professional mechanic stocking up on essentials or a homeowner tackling weekend projects, having a pack of these lock washers on hand is incredibly practical.
The black oxide finish not only looks professional but also provides a layer of protection in various environments.

They're a small but important component that helps ensure your assemblies stay tight and safe over time.

5 out of 5