Value Collection A997409 M12 Fender Flat Washer 25-pack

Product Description

The VALUE COLLECTION A997409 is a metric fender flat washer designed for use with M12 fasteners. Manufactured from steel with a zinc-plated finish, this washer provides a wide bearing surface that distributes clamp load across a larger area than a standard flat washer. The oversized outer diameter helps prevent fastener pull-through in softer materials or oversized holes. With an inside diameter of 13 millimeters, an outside diameter of 37 millimeters, and a thickness of 3 millimeters, it conforms to DIN 9021 and ISO 7093 standards. Each package contains 25 washers. Plumbers, electricians, HVAC technicians, and general contractors commonly use fender washers in mechanical and structural fastening applications.

This washer is suited for residential and commercial applications where a large-flange, load-spreading washer is required on M12 bolts or screws. Typical uses include panel mounting, equipment anchoring, sheet metal assembly, and general mechanical fastening where the joint substrate is thin, soft, or prone to pull-through. The zinc-plated finish provides a basic level of corrosion resistance appropriate for indoor or protected-environment installations.

Key Features

• Wide 37-millimeter outer diameter distributes clamp load to prevent pull-through
• Steel construction with zinc-plated finish for corrosion resistance in dry or protected environments
• Conforms to DIN 9021 and ISO 7093 fastener standards
• 13-millimeter inside diameter sized for M12 fasteners
• 3-millimeter thickness provides consistent seating under fastener head or nut
• Sold in a 25-piece package to support single-job and small-batch needs

Compatibility

Designed for use with M12 metric bolts, screws, and nuts in applications requiring a fender-style flat washer per DIN 9021 or ISO 7093.

Installation Notes

Install between the fastener head or nut and the mating surface to distribute load. Ensure the washer seats flat against both surfaces before applying final torque. For outdoor or high-moisture applications, evaluate whether a higher-grade corrosion-resistant finish is required, as zinc plating has limited resistance to prolonged wet exposure. Follow applicable mechanical or structural codes for the specific fastener assembly.