Value Collection HLWIA031USA-100BX Split Lock Washer 5/16

Product Description

The VALUE COLLECTION HLWIA031USA-100BX is a high collar split lock washer designed for 5/16 inch screws. Manufactured from steel with a bright uncoated finish, it provides mechanical resistance to fastener loosening caused by vibration and dynamic loads. The washer features an inside diameter range of 0.318 to 0.338 inches and a maximum outside diameter of 0.46 inches, with a thickness of 0.093 inches. This style of lock washer is widely used in mechanical assembly, HVAC equipment mounting, electrical enclosures, and general industrial fastening applications. The box contains 100 washers.

High collar split lock washers are suited for applications where standard-height lock washers may not provide adequate bite or bearing surface. The high collar design increases contact area against the fastener head or mating surface, making it a common choice in equipment assembly, panel fabrication, and structural fastening in both commercial and industrial settings. Licensed tradespeople and assembly technicians working on HVAC units, electrical panels, and mechanical equipment regularly specify this washer type when code or equipment standards call for vibration-resistant fastening.

Key Features

• High collar design increases bearing surface contact compared to standard split lock washers
• Inside diameter range of 0.318 to 0.338 inches fits 5/16 inch fasteners
• Maximum outside diameter of 0.46 inches for compact footprint in tight clearance applications
• Steel construction with bright uncoated finish for general-purpose indoor mechanical use
• Thickness of 0.093 inches provides consistent spring tension under load
• Sold in a box of 100 for production, service, or shop stock

Compatibility

Designed for use with 5/16 inch screws and bolts in standard inch-measurement fastening applications. Suitable for general mechanical assembly, equipment mounting, and panel fabrication where a high collar split lock washer is specified.

Installation Notes

Install these washers between the fastener head and the mating surface before torquing the screw or bolt. Ensure the split gap is seated correctly against the work surface to allow the washer to engage under load. Follow the equipment manufacturer fastener specifications for proper torque values. For electrical enclosures or HVAC equipment, de-energize and lock out the system before performing any fastening work.