Value Collection LWHIS0-4USA-100BX Split Lock Washer 100pk

Product Description

The VALUE COLLECTION LWHIS0-4USA-100BX is a Grade 2 spring steel split lock washer sized for No. 4 screws. It delivers the helical spring tension needed to resist loosening under vibration and dynamic loads. The uncoated bright finish suits general-purpose mechanical and light-duty fastening applications. Inside diameter measures 0.114 inches minimum to 0.120 inches maximum, outside diameter reaches 0.243 inches maximum, and the washer thickness is 0.031 inches. This box contains 100 washers, making it a practical bench-stock quantity for assembly and maintenance work. Licensed tradespeople and assembly technicians working in electrical, HVAC, or general mechanical installs will find this a standard consumable item.

This split lock washer fits No. 4 machine screws and is suited for residential and light commercial assembly tasks where a low-profile locking element is required at threaded fastener joints. Common applications include panel enclosure assembly, control board mounting, and sheet-metal fastening in HVAC and electrical work. The inch-dimensioned specification makes it compatible with standard imperial fastener systems. The uncoated finish is appropriate for dry or protected indoor environments where corrosion resistance is not a primary requirement.

Key Features

• Sized for No. 4 screws with 0.114 to 0.120 inches inside diameter
• Maximum outside diameter of 0.243 inches for low-profile fitment
• 0.031 inches thick helical split design generates spring tension to resist vibration loosening
• Grade 2 spring steel construction for reliable elasticity and hardness
• Bright uncoated finish suitable for dry indoor service environments
• Sold in a 100-piece box for efficient bench-stock replenishment

Compatibility

Designed for use with No. 4 imperial machine screws in general mechanical, electrical, and HVAC panel assembly applications where a standard inch-series split lock washer is specified.

Installation Notes

Split lock washers are installed between the fastener head or nut and the mating surface before the fastener is torqued down. Ensure the split ends seat flat against both contact surfaces as the fastener is tightened. De-energize electrical panels and equipment before performing any fastening work inside enclosures, in accordance with applicable NEC lockout/tagout requirements. Do not reuse a lock washer that has been fully compressed flat, as the spring tension will not be restored.