Value Collection FW5XX04500-005BX M45 Flat Washer 316 Ss

Product Description

The VALUE COLLECTION FW5XX04500-005BX is an M45 standard flat washer manufactured from Grade 316 stainless steel with a plain finish. It conforms to DIN 125A, the metric standard governing flat washer dimensions and tolerances. The washer features a 46mm inside diameter and an 85mm outside diameter, providing a broad bearing surface to distribute fastener load across a joint face. Grade 316 stainless steel offers superior corrosion resistance compared to Grade 304, making this washer well suited for wet, marine, or chemically aggressive environments. The plain finish leaves the base material exposed with no additional coating or plating. This part is sold individually.

This washer is used in heavy industrial, marine, chemical processing, and structural assembly applications where M45 fasteners are specified and corrosion resistance is a primary concern. It seats under bolt heads or nuts on M45 threaded fasteners to protect mating surfaces and prevent pull-through on softer substrates. Installers in pipe support fabrication, offshore equipment assembly, and large-format structural work commonly specify DIN 125A flat washers at this size. Its metric dimensioning makes it appropriate for equipment built to European or international standards.

Key Features

• Grade 316 stainless steel construction for enhanced resistance to chlorides and corrosive media
• Conforms to DIN 125A metric fastener standard for dimensional consistency
• 46mm inside diameter sized for M45 screw or bolt shanks
• 85mm outside diameter provides wide load-bearing surface
• Plain finish with no coating, suitable for applications requiring bare stainless contact
• Sold as a single unit with a minimum order quantity of 1

Compatibility

Designed for use with M45 metric threaded fasteners in assemblies requiring DIN 125A standard flat washers.

Installation Notes

Installation is performed by millwrights, pipefitters, structural ironworkers, or other trades working with large-diameter metric fasteners. Ensure the mating fastener is M45 and that the bolt or nut bearing surface is fully seated against the washer face before applying final torque. Inspect the washer for burrs or distortion before installation that could affect load distribution. Follow applicable structural or mechanical codes for fastener assembly procedures on the specific application.