Value Collection A210022 M4 Fender Flat Washer 50-pack

Product Description

The VALUE COLLECTION A210022 is an M4 fender flat washer manufactured from grade 18-8 stainless steel with a plain finish. Fender washers feature a larger outside diameter relative to the inside diameter, distributing clamping load over a wider surface area and reducing the risk of pull-through in softer substrates. The 4.3 mm inside diameter accommodates M4 fasteners, while the 12 mm outside diameter provides a broad bearing surface. This washer meets DIN 9021 dimensional standards and uses metric sizing throughout. It is suited for general mechanical assembly, electrical enclosure work, HVAC panel fabrication, and light structural applications where corrosion resistance is a priority. Sold in a pack of 50.

Grade 18-8 stainless steel makes this washer a practical choice for indoor and outdoor installations where exposure to moisture, mild chemicals, or humid conditions could cause carbon steel hardware to corrode. Typical applications include equipment mounting, sheet metal assembly, conduit and junction box work, and plumbing fixture installation. The plain finish means no coating to chip or flake in service. Tradespeople working in coastal environments, mechanical rooms, or food-adjacent spaces often specify 18-8 stainless hardware for longevity.

Key Features

• Grade 18-8 stainless steel construction for corrosion resistance in wet or humid environments
• Fender-style large OD (12 mm) distributes load over a wider bearing surface than standard flat washers
• 4.3 mm inside diameter sized for M4 fasteners
• Meets DIN 9021 dimensional standard for metric fender washers
• Plain finish with no coating to degrade or contaminate adjacent materials
• Sold in a convenient pack of 50

Compatibility

Designed for use with M4 metric fasteners in general mechanical, electrical, plumbing, and HVAC assembly applications requiring a DIN 9021 compliant fender washer.

Installation Notes

Install using hand tools appropriate for the fastener type; avoid over-torquing, which can deform the washer and reduce clamping effectiveness. Power down or de-energize any electrical assembly before adding or replacing hardware on live panels. When used in stainless-on-stainless assemblies, apply an anti-seize compound to threaded fasteners to prevent galling. Verify fastener grade compatibility before use in structural or pressure-rated applications.