S-98688A122 19 mm ID x 30 mm OD DIN 433; ISO 7092 General Purpose Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc plating that protects against rust and extends service life in harsh industrial environments
• Exceptional load distribution thanks to precise 19mm ID and 30mm OD dimensions, preventing surface damage and fastener loosening
• Consistent thickness control (2.3-2.7mm) ensures uniform pressure distribution and reliable joint integrity under vibration
• High mechanical strength with Rockwell B76 hardness, providing excellent durability for M18 screw applications
• Guaranteed dimensional accuracy through compliance with DIN 433 and ISO 7092 international standards
• Environmental compliance assurance with RoHS 3 and REACH certifications for safe use in regulated industries
• Optimized metric sizing specifically engineered for M18 fasteners, ensuring perfect fit and installation efficiency

Professional Applications & Engineering Value

This zinc plated steel flat washer delivers critical engineering solutions for industrial applications where vibration resistance and corrosion protection are paramount. The M18 metric sizing combined with DIN 433 and ISO 7092 compliance ensures precise fitment in heavy machinery, structural steel connections, and automotive assemblies. The zinc plating provides essential galvanic protection against moisture and chemical exposure, while the Rockwell B76 hardness maintains dimensional stability under extreme clamping forces. These flat washers effectively prevent bolt head embedding, distribute loads evenly across surfaces, and maintain joint integrity in high-vibration environments—making them ideal for construction equipment, industrial machinery, and transportation applications where reliability cannot be compromised.

Specification Summary & Compliance

This M18 flat washer features precise metric dimensions with 19mm internal diameter, 30mm outer diameter, and controlled thickness between 2.3-2.7mm. Manufactured from zinc plated steel with Rockwell B76 hardness rating, the product strictly adheres to DIN 433 and ISO 7092 dimensional standards for guaranteed interchangeability. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental safety and unrestricted use across European and international markets.