S-90483A176 4.3 mm ID x 8 mm OD DIN 433 General Purpose Washers

Key Features & Benefits at a Glance

• Superior corrosion protection with zinc yellow-chromate plating, extending service life in harsh environments
• Precise dimensional fit with 4.3mm ID and 8mm OD, ensuring proper alignment and load distribution for M4 screws
• Enhanced mechanical durability from Rockwell C38 hardness, resisting deformation under pressure
• Reliable standardization per DIN 433, guaranteeing interchangeability and consistent performance
• Optimal thickness control (0.5-0.6mm) for balanced spacing and vibration resistance
• Environmental compliance with RoHS 3 and REACH, meeting strict industrial safety regulations
• Cost-effective maintenance through long-lasting steel construction and corrosion-resistant coating

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these M4 flat washers address critical challenges in assembly integrity and environmental exposure. The zinc yellow-chromate plated steel construction provides a robust barrier against oxidation and chemical wear, significantly reducing failure risks in machinery, automotive, and electrical enclosures. With precise metric dimensions adhering to DIN 433 standards, they ensure uniform load distribution, prevent fastener loosening from vibrations, and maintain joint stability. The Rockwell C38 hardness further enhances resistance to embedding and surface damage, making them ideal for high-stress environments where reliability is paramount.

Specification Summary & Compliance

This flat washer features a 4.3mm inner diameter, 8mm outer diameter, and 0.5-0.6mm thickness, manufactured to DIN 433 specifications for dimensional accuracy and performance. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety standards in industrial use.