Hillman 5/16 In. Steel Galvanized Split Lock Washer (100 Ct.)

Hot dipped galvanized hardened steel. Suitable for use in treated lumber. These fasteners contain split ends that help "lock" into the mating material, thus providing a locking feature when tightened beneath a nut. Packages of 100-pieces.

Features:

• Commonly used in applications where two pieces of wood are being joined together
• Split ends grip the material surface to prevent loosening during vibration
• Hot-dipped galvanized finish offers best-in-class protection against rust
• Prevents a nut, bolt, or screw of the same finish and size from pulling through material
• These washers are approved for use in any project involving treated lumber