Value Collection 239070PS External Tooth Lock Washer 1/4 in

Product Description

The VALUE COLLECTION 239070PS is a zinc-plated, Grade 2 steel external tooth lock washer sized for 1/4 inch screws. It features an inside diameter of 0.267 inches and an outside diameter of 0.51 inches, with a thickness of 0.028 inches. The external tooth design bites into the mating surface and fastener head when tightened, creating resistance against loosening from vibration or torque. The zinc plating provides corrosion resistance suitable for general indoor and light-duty applications. This washer is a standard hardware component installed by electricians, HVAC technicians, plumbers, and mechanical contractors during equipment assembly and panel work.

External tooth lock washers in this size range are used across a broad range of trade applications including electrical panel and junction box assembly, HVAC equipment mounting, plumbing fixture installation, and general mechanical assembly. The 1/4 inch screw size is one of the most common fastener diameters in light commercial and residential construction, making this washer a routine stock item for service vans, shop bins, and job-site kits.

Key Features

• External tooth design grips mating surface to resist loosening under vibration
• Inside diameter of 0.267 inches fits standard 1/4 inch fasteners
• Outside diameter of 0.51 inches with a thickness of 0.028 inches
• Grade 2 steel construction provides reliable strength for general-duty fastening
• Zinc plating offers corrosion resistance for typical indoor service environments

Compatibility

Designed for use with 1/4 inch screws and bolts in general mechanical, electrical, HVAC, and plumbing assembly applications where an external tooth lock washer is specified.

Installation Notes

Lock washers of this type are installed between the fastener head and the mating surface before final torque is applied. Ensure the seating surface is clean and free of debris so the teeth can engage fully. Do not reuse lock washers that have been fully compressed, as the locking action will be reduced. Installation is standard practice for electricians, HVAC technicians, and plumbers working under NEC or IFGC guidelines where fastener retention is required.