Value Collection 31340 External Tooth Lock Washer No. 6

Product Description

The VALUE COLLECTION 31340 is a No. 6 screw external tooth lock washer manufactured from Grade 2 steel with a zinc-plated finish. External tooth lock washers use serrated teeth around the outer diameter to bite into the mating surface and fastener head, resisting loosening caused by vibration and torque. This package contains 100 washers. The zinc plating provides a baseline level of corrosion resistance suitable for general indoor and light-duty applications. With an inside diameter ranging from 0.105 to 0.142 inches and an outside diameter ranging from 0.306 to 0.317 inches, these washers are sized for use with No. 6 machine screws and bolts.

These lock washers are used across electrical, HVAC, plumbing, and general mechanical assembly work wherever a No. 6 fastener requires vibration resistance. Common applications include panel mounting, control board assembly, light fixture mounting, and equipment enclosure work. The external tooth design is well suited for softer mating materials where tooth engagement is critical. The 100-piece pack is sized for shop stock or job-lot use on service calls and small installations.

Key Features

• External tooth design bites into mating surfaces to resist loosening under vibration
• Grade 2 steel construction for general-purpose fastening applications
• Zinc-plated finish for baseline corrosion resistance in dry and light-duty environments
• Sized for No. 6 screws with inside diameter range of 0.105 to 0.142 inches
• Thickness of 0.017 inches for low-profile installation clearance
• Pack of 100 washers for shop stock or field use

Compatibility

Designed for use with No. 6 machine screws and bolts in general mechanical, electrical, and light industrial assembly applications.

Installation Notes

Installation requires no special tooling beyond standard hand or power fastening equipment. Place the washer between the fastener head and the mating surface with the teeth facing the fastener head or the work surface, depending on the application requirement. Ensure mating surfaces are clean and free of debris so the teeth can engage properly. Follow applicable codes such as the NEC for electrical panel and enclosure assemblies.