Value Collection 39730 Split Lock Washer 9/16 in Pack 25

Product Description

The VALUE COLLECTION 39730 is a split lock washer sized for 9/16 inch screws, manufactured from AISI 4037 alloy steel with a zinc yellow dichromate finish. Split lock washers are installed under fastener heads or nuts to provide spring tension that resists loosening caused by vibration and dynamic loads. This washer measures 0.564 to 0.574 inches inside diameter, 0.965 inches maximum outside diameter, and 0.141 inches thick. The zinc yellow dichromate coating provides corrosion resistance in moderate-exposure environments. Sold in a package of 25, this part is suitable for HVAC equipment assembly, electrical panel mounting, plumbing fixture installation, and general mechanical fastening applications handled by trade professionals.

This split lock washer is used wherever a 9/16 inch fastener requires vibration-resistant retention. Typical applications include equipment mounting, structural brackets, junction box covers, and mechanical assemblies in residential and light commercial settings. The alloy steel construction handles moderate clamping loads without deforming under torque. The zinc yellow dichromate finish suits indoor and sheltered outdoor installations where mild corrosion protection is required.

Key Features

• AISI 4037 alloy steel construction for reliable spring tension and load resistance
• Zinc yellow dichromate finish for moderate corrosion protection
• Inside diameter range of 0.564 to 0.574 inches for consistent fit on 9/16 inch fasteners
• 0.141 inch thickness delivers proper split-lock spring action under torque
• 0.965 inch maximum outside diameter provides adequate bearing surface
• Sold in a package of 25 for multi-fastener jobs

Compatibility

Designed for use with 9/16 inch screw and bolt fasteners in standard inch-measurement assemblies across HVAC, plumbing, electrical, and general mechanical applications.

Installation Notes

Installation is performed by HVAC technicians, electricians, plumbers, and general mechanics using standard hand tools or impact drivers. Always de-energize electrical equipment and shut off relevant utilities before disassembling fastened assemblies. Place the split lock washer between the fastener head or nut and the mating surface with the split gap oriented consistently. Do not reuse lock washers that have been fully compressed flat, as they will no longer provide adequate spring tension.