S-98687A325 21 mm ID x 37 mm OD DIN 125 General Purpose Washers

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with black oxide steel coating, extending service life in demanding industrial environments.
• Precise dimensional fit for M20 screws, ensuring secure fastening and uniform load distribution across assemblies.
• DIN 125 standard compliance guarantees interchangeability and reliability in European machinery and equipment.
• RoHS 3 and REACH compliance meets strict environmental regulations, making it suitable for global supply chains.
• Optimized thickness range (2.7-3.3 mm) provides consistent spacing and vibration damping in metric applications.
• Durable steel construction offers high strength for repetitive use in automotive, construction, and manufacturing sectors.
• Wide outer diameter (37 mm) increases bearing surface, reducing the risk of surface damage and loosening under stress.

Professional Applications & Engineering Value

This M20 flat washer is engineered to address common industrial challenges such as fastener loosening, surface abrasion, and corrosion. Manufactured from black oxide steel, it provides a protective layer that minimizes rust in humid or outdoor settings, crucial for machinery, structural frameworks, and automotive assemblies. The DIN 125 specification ensures precise metric dimensions (21mm ID, 37mm OD) for accurate alignment with M20 screws, preventing misalignment and distributing loads evenly to avoid joint failure. Its flat washer design is ideal for applications requiring reliable spacing and shock absorption, from heavy-duty equipment to electrical enclosures, enhancing longevity and reducing maintenance costs.

Specification Summary & Compliance

This washer adheres to DIN 125 standards for dimensional accuracy, with an inner diameter of 21 mm, outer diameter of 37 mm, and thickness between 2.7–3.3 mm, suitable for M20 screw sizes. It conforms to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and compliant with international environmental and safety requirements for industrial use.