Value Collection 125-20-A2 M20 Standard Flat Washer 18-8 Ss

Product Description

The VALUE COLLECTION 125-20-A2 is a metric standard flat washer designed for use with M20 fasteners. Made from Grade 18-8 stainless steel, it provides corrosion resistance in wet, outdoor, and chemically exposed environments. The washer measures 21mm inside diameter, 37mm outside diameter, and 3mm thick, conforming to DIN 125, ISO 7089, and ISO 7090 dimensional standards. It distributes clamp load across the bearing surface, reducing fastener pull-through and protecting the mating material. Machinists, maintenance mechanics, pipefitters, and structural assemblers use this washer in metric bolted connections across industrial, commercial, and marine applications.

This flat washer suits M20 bolted assemblies in general industrial fabrication, equipment mounting, structural framing, and plumbing or mechanical system installations where metric fasteners and corrosion resistance are required. The 18-8 stainless steel construction makes it appropriate for both indoor and outdoor service conditions, including environments with moisture or mild chemical exposure. It follows the DIN 125 and ISO 7089/7090 fastener standards, making it compatible with metric hardware in compliant assemblies worldwide.

Key Features

• Grade 18-8 stainless steel construction for corrosion resistance in wet and outdoor environments
• Conforms to DIN 125, ISO 7089, and ISO 7090 dimensional standards
• 21mm inside diameter sized for M20 fasteners
• 37mm outside diameter and 3mm thickness for broad load distribution
• Hardness rated at 140 HV for reliable clamping without deformation under load
• Metric system of measurement for use in globally standardized bolted assemblies

Compatibility

Designed for use with M20 metric screws and bolts in assemblies conforming to DIN 125, ISO 7089, and ISO 7090 fastener standards.

Installation Notes

Install by a qualified mechanic or assembler following applicable torque specifications for the fastener grade and joint design. Ensure the washer seats flat against the mating surface with the fastener centered through the 21mm bore before tightening. Do not mix stainless steel washers with carbon steel fasteners in environments prone to galvanic corrosion without evaluating material compatibility. Inspect washers for deformation or surface damage before reuse in critical joints.