Value Collection 88546569 Split Lock Washer 5/16 in Steel 25pk

Product Description

The VALUE COLLECTION 88546569 is a steel split lock washer sized for 5/16 inch screws. Split lock washers are used under fastener heads or nuts to resist loosening caused by vibration and torque relaxation. The helical split creates spring tension that bites into the mating surface and the fastener, maintaining clamp load over time. This washer ships in a package of 25 and is manufactured from steel with a bright, uncoated finish. It is a standard inch-system fastener used across mechanical, electrical, plumbing, and HVAC assemblies wherever vibration resistance is required at the 5/16 inch fastener size.

These split lock washers are suited for general-purpose fastening in residential and light commercial applications. Common install scenarios include equipment mounting, panel assembly, pipe hanger hardware, and conduit support brackets. Tradespeople across HVAC, electrical, and plumbing disciplines use this washer size routinely when assembling equipment frames, securing controls, or fastening support structure. The uncoated bright finish is appropriate for indoor or protected environments where corrosion exposure is limited.

Key Features

• Sized for 5/16 inch screws with an inside diameter range of 0.318 to 0.338 inches
• Maximum outside diameter of 0.46 inches for compact seating in tight clearances
• Steel construction provides reliable spring tension and hardness under torque
• Bright uncoated finish suits dry or protected indoor installations
• 0.093 inch thickness delivers consistent helical spring preload
• Sold in a 25-piece package for small-quantity needs with a minimum order of 1 package

Compatibility

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

Installation Notes

Split lock washers are installed between the fastener head or nut and the mating surface before final torque is applied. Ensure the washer seats flat against both surfaces before tightening. Do not reuse split lock washers that have been fully compressed flat, as the spring effect is lost once the gap is closed. Applicable NEC and mechanical code requirements for equipment fastening should be followed for trade installations.