S-98688A155 10.5 mm ID x 18 mm OD DIN 433 General Purpose Washers

Key Features & Benefits at a Glance

• Enhanced Corrosion Resistance: Zinc plating provides a durable protective barrier, extending service life in demanding industrial environments.
• Superior Load Distribution: The 18mm outer diameter effectively spreads clamping force, preventing surface damage and maintaining joint integrity.
• Precision Fit for M10 Fasteners: 10.5mm inner diameter ensures a secure and accurate fit on M10 screws, reducing installation errors.
• Optimized Strength and Durability: Rockwell C38 hardness offers excellent resistance to deformation under high stress and repeated use.
• Guaranteed Dimensional Consistency: Manufactured to DIN 433 standards for reliable interchangeability and predictable performance in assemblies.
• Broad Industrial Compliance: Meets RoHS 3 and REACH regulations, ensuring safety and environmental responsibility for global supply chains.
• Robust Construction: 1.4-1.8mm thickness provides a solid, reliable spacer that withstands vibration and heavy loads.

Professional Applications & Engineering Value

This M10 metric flat washer is engineered to solve critical challenges in industrial assembly and machinery. The zinc plated steel construction combats corrosion, a common failure point in humid or outdoor settings, significantly reducing maintenance frequency and replacement costs. Its specific dimensions (10.5mm ID, 18mm OD) are calculated to provide optimal load distribution, preventing bolt heads or nuts from embedding into softer materials and preserving the structural integrity of the connection. Adherence to the DIN 433 standard guarantees that every washer delivers consistent performance, which is vital for automated production lines and high-volume manufacturing where component reliability is non-negotiable. This makes it an indispensable component for automotive, construction, and heavy equipment applications.

Specification Summary & Compliance

This washer conforms to the dimensional and tolerance specifications of DIN 433. Key specifications include an Inner Diameter of 10.5 mm, Outer Diameter of 18 mm, and a Thickness of 1.4-1.8 mm, designed for use with M10 screw size. The material is zinc plated steel with a hardness of Rockwell C38. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for use in regulated markets.