S-97725A217 18.2 mm ID x 21.9 mm OD DIN 7603 Metal Sealing Washers
Metal Sealing Washers
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Basic Information
Dimension Parameters
Material & Strength Parameters
Installation & Application Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior corrosion resistance from high-quality aluminum construction, ideal for harsh environments without rust concerns
- Lightweight design reduces overall assembly weight, perfect for weight-sensitive applications like aerospace and automotive
- Precise dimensional accuracy with 18.2mm ID and 21.9mm OD ensures perfect fit for M18 screws, preventing loosening and misalignment
- Non-magnetic properties make these washers suitable for electronic and sensitive equipment where magnetic interference must be avoided
- DIN 7603 compliance guarantees consistent quality and interchangeability in metric fastener systems
- RoHS 3 compliance ensures environmental safety and meets strict regulatory standards for hazardous substances
- Durable performance with 1.3-1.7mm thickness provides reliable load distribution and surface protection
Professional Applications & Engineering Value
This M18 metric aluminum flat washer delivers critical engineering advantages in demanding sectors. Its aluminum material offers inherent corrosion resistance, eliminating galvanic corrosion risks when paired with compatible metals, while the lightweight nature reduces mass in aerospace and automotive assemblies. The flat washer design conforming to DIN 7603 ensures uniform pressure distribution, preventing surface damage and bolt loosening under vibration. With a precise 18.2mm inner diameter and 21.9mm outer diameter, it maintains secure fastening for M18 screw sizes in industrial machinery, electrical enclosures, and marine applications where weight savings and durability are paramount.
Specification Summary & Compliance
This washer features metric dimensions with an ID of 18.2mm, OD of 21.9mm, and thickness range of 1.3-1.7mm, designed for M18 screw sizes. It conforms to DIN 7603 standards for dimensional accuracy and manufacturing consistency. The product is RoHS 3 (2015/863/EU) compliant, ensuring adherence to environmental regulations for hazardous substance restrictions.
