Value Collection LWIS0310USA-100BX Split Lock Washer 100pk

Product Description

The VALUE COLLECTION LWIS0310USA-100BX is a steel split lock washer sized for 5/16 inch screws. It features a zinc plated finish that provides corrosion resistance in general-use fastening applications. The washer has an inside diameter of 0.314 to 0.322 inches and an outside diameter of 0.583 to 0.586 inches, with a thickness of 0.078 inches. Split lock washers work by biting into the mating surfaces under load, resisting loosening caused by vibration or torque. This box contains 100 washers and is suited for use by electricians, HVAC technicians, plumbers, and general mechanical tradespeople who need a reliable bulk fastener supply.

This split lock washer is used wherever a 5/16 inch fastener requires resistance to loosening under vibration or dynamic load. Typical applications include mechanical equipment mounting, electrical panel and enclosure assembly, HVAC unit installation, and pipe or conduit support hardware. The zinc plated finish makes it suitable for indoor environments and light-duty applications where moderate corrosion resistance is acceptable. Sold in a box quantity of 100 per order.

Key Features

• Fits 5/16 inch screw with 0.314 to 0.322 inch inside diameter
• Outside diameter range of 0.583 to 0.586 inches
• Thickness of 0.078 inches for consistent clamping load
• Steel construction with zinc plated finish for corrosion resistance
• Split design bites into mating surfaces to resist loosening under vibration
• Sold in a box of 100 washers

Compatibility

Designed as a standard inch-series split lock washer for use with 5/16 inch fasteners in general mechanical, electrical, and HVAC assembly applications.

Installation Notes

Install between the fastener head or nut and the mating surface, with the split gap oriented to allow the washer to compress fully as the fastener is tightened. Ensure mating surfaces are clean and free of debris before assembly. Follow applicable NEC, IFGC, or equipment manufacturer torque guidance for the fastener being used. Do not reuse compressed split lock washers, as the locking action is reduced once the washer has been fully flattened.