[4500 BULK] Medium Split Lock Washers Steel Black Oxide 5/16

Medium Split Lock Washers in steel with a black oxide finish deliver reliable anti-loosening performance for 5/16 fasteners. These washers are designed to resist vibration and dynamic loads in demanding applications.

Key features

• Medium split design applies targeted spring tension to lock threads in place, resisting vibration and dynamic loads.
• Steel construction provides strong shear and tensile strength for long-lasting performance.
• Black oxide finish offers improved corrosion resistance and a low-profile, non-reflective appearance for industrial and automotive environments.
• Precise inner diameter compatible with standard 5/16 fasteners and hardware.

Specifications

• Material: Steel
• Finish: Black oxide
• Size: 5/16 (inner diameter)
• Type: Medium split lock washer

Applications

Ideal for machinery, automotive assemblies, equipment maintenance, and general construction where vibration resistance and secure fastener retention are critical.

Why choose these?

• Improved lock integrity under dynamic loads
• Easy to install with standard wrenches or sockets
• Cost-effective solution for anti-loosening in metal-to-metal joints

To maximize performance, pair these washers with compatible 5/16 fasteners and torque specifications recommended by your hardware manufacturer. Store in a dry environment to maintain the finish.