Value Collection WY_09170408 M20 Flat Washer 316 Ss

Product Description

The VALUE COLLECTION WY_09170408 is a standard flat washer designed for use with M20 fasteners. It is manufactured from Grade 316 stainless steel, which provides strong resistance to corrosion and oxidation in demanding environments including marine, chemical, and outdoor industrial applications. The washer measures 21mm inside diameter by 37mm outside diameter with a 3mm thickness, and carries a plain finish with no additional coating or plating. It conforms to DIN 125, ISO 7089, and ISO 7090 fastener standards, making it suitable for metric bolted assemblies where dimensional consistency and material certification matter.

This washer is used in structural, mechanical, and process-equipment assemblies where stainless steel hardware is specified to resist corrosive media or where contact with dissimilar metals must be minimized. Typical installation scenarios include pipe flange connections, equipment mounting, panel attachment, and general industrial fastening in wet or chemically active environments. It is sized for M20 threaded fasteners and is sold in a minimum order quantity of 5 pieces per order, with a package quantity of 1 per unit as listed.

Key Features

• Grade 316 stainless steel construction for superior corrosion resistance in marine and chemical environments
• Conforms to DIN 125, ISO 7089, and ISO 7090 standards for dimensional accuracy and interchangeability
• 21mm inside diameter sized for M20 fasteners
• 37mm outside diameter and 3mm thickness for appropriate load distribution
• Plain finish with no coating, preserving full stainless steel surface properties
• Hardness rated at 140 HV for consistent performance under clamp load

Compatibility

Designed for use with M20 metric fasteners in assemblies requiring Grade 316 stainless steel hardware conforming to DIN 125, ISO 7089, or ISO 7090 dimensional standards.

Installation Notes

Installation is performed by qualified tradespeople or mechanical assemblers following applicable torque specifications for M20 fasteners as defined by project engineering documents or relevant standards. Ensure mating surfaces are clean and free of debris before seating the washer. When combining with other stainless steel fastener components, verify material compatibility to avoid galling; application of an appropriate anti-seize compound is common practice. Follow all applicable mechanical and structural codes for the installation environment.