Value Collection FW1X00400-100BX M4 Fender Flat Washer 100 Pack

Product Description

The VALUE COLLECTION FW1X00400-100BX is an M4 fender flat washer manufactured from Grade 18-8 stainless steel with a plain finish. Fender washers feature a larger-than-standard outside diameter relative to the inside diameter, spreading clamp load over a wider surface area and reducing pull-through on softer substrates. This washer conforms to DIN 9021 and uses metric dimensions: 4.3 mm inside diameter and 12 mm outside diameter. The 18-8 stainless steel construction provides solid corrosion resistance in wet or outdoor environments. Sold in a minimum order quantity of 100 pieces, this washer is a practical stock item for mechanical assembly, electrical panel work, HVAC equipment mounting, and general trade applications.

This washer is suited for use wherever an M4 fastener requires a larger bearing surface to distribute load or prevent pull-through. Common applications include sheet metal assembly, electrical enclosure work, HVAC unit mounting, plumbing fixture attachment, and light structural fastening. The metric sizing and DIN 9021 standard make it a direct-fit choice for equipment manufactured to metric specifications. The plain finish and 18-8 stainless steel grade are appropriate for indoor and moderately corrosive outdoor environments.

Key Features

• Grade 18-8 stainless steel construction for corrosion resistance in wet and outdoor environments
• Enlarged outside diameter distributes clamp load and reduces pull-through on soft materials
• Conforms to DIN 9021 fastener standard for metric hardware compatibility
• Plain finish with no coating for direct metallic contact and straightforward installation
• Minimum order quantity of 100 pieces supports bulk stocking for service vehicles and shop inventory

Compatibility

Designed for use with M4 metric screws and bolts. Conforms to DIN 9021, making it compatible with standard metric fastener assemblies requiring a fender-style washer.

Installation Notes

Installation requires no special tools beyond standard hand tools or a torque wrench appropriate to the fastener and substrate. Ensure the mating surface is clean and free of burrs before seating the washer. In electrical or HVAC applications, de-energize equipment and follow applicable NEC or equipment manufacturer lockout procedures before working on any assembly using these fasteners. Do not exceed the torque rating of the M4 fastener being used.