Acorn FW38112J Fender Washer 3/8 X 1-1/2 Inch

Product Description

The ACORN FW38112J is a fender washer sized at 3/8 x 1-1/2 inches, designed to distribute load across a larger surface area than standard flat washers. Fender washers are used in fastening applications where the bolt or screw head would otherwise pull through or compress a soft or thin material. The oversized outer diameter spreads clamping force evenly, reducing the risk of surface damage or fastener pull-through. This washer is a standard hardware component used by plumbers, HVAC technicians, electricians, and general tradespeople across a wide range of mechanical and structural fastening tasks.

Fender washers in this size range are commonly used in residential and light commercial construction and mechanical installations. Typical applications include sheet metal work, HVAC duct and equipment mounting, plumbing fixture attachment, conduit support, and general equipment assembly. The 3/8-inch inner diameter accommodates a 3/8-inch bolt or threaded fastener, while the 1-1/2-inch outer diameter provides broad load distribution.

Key Features

• 3/8-inch inner diameter fits standard 3/8-inch fasteners
• 1-1/2-inch outer diameter for increased load distribution
• Suitable for use in HVAC, plumbing, electrical, and general mechanical applications
• Standard fender washer profile for broad trade compatibility

Compatibility

Designed as a standard replacement or stock fender washer for use with 3/8-inch bolts and threaded fasteners in general trade and mechanical fastening applications.

Installation Notes

Fender washers are installed by tradespeople as part of standard bolted or screwed connections. Place the washer between the fastener head or nut and the mating surface before torquing. Always de-energize electrical equipment and shut off fluid systems before performing any fastening work in those environments. Follow applicable NEC, IPC, or IFGC guidelines as required by the specific application.

Technical Specifications

• Inner Diameter: 3/8 inches
• Outer Diameter: 1-1/2 inches
• Weight: 2.64 pounds
• UPC: 78103556009

Standard Information

• Brand: ACORN
• Manufacturer Part Number: FW38112J