S-5909K76 25.04 mm ID x 42 mm OD DIN 5405-3, ISO 303 Washers for Needle-Roller Thrust Bearings

Key Features & Benefits at a Glance

• Precise 25mm shaft compatibility with controlled inner diameter tolerance ensures a secure, non-slip fit for consistent assembly performance.
• Robust steel construction provides excellent load distribution and resistance to deformation under pressure, enhancing joint longevity.
• DIN 5405-3 and ISO 303 compliance guarantees dimensional accuracy and interchangeability, reducing sourcing risks in regulated industries.
• RoHS 3 and REACH compliance ensures environmental safety and material sustainability, meeting strict international supply chain requirements.
• Optimized 1mm thickness with tight tolerance maintains uniform spacing and vibration damping without adding excessive bulk to the assembly.
• 42mm outer diameter design offers an enlarged bearing surface to effectively prevent fastener embedment and surface damage.
• Full metric specification simplifies integration with global machinery and components, streamlining international procurement and inventory.

Professional Applications & Engineering Value

This precision metric steel washer is engineered to address critical challenges in industrial machinery and automotive assemblies where reliable shaft positioning is paramount. The 25mm inner diameter, manufactured to exacting DIN 5405-3 and ISO 303 standards, eliminates play and misalignment on 25mm shafts, reducing wear and maintenance downtime. Its steel material ensures consistent performance under dynamic loads, while the 1mm thickness provides essential spacing without compromising compact design requirements. Ideal for bearing retention, gear mounts, and precision engineering applications, this washer delivers predictable, repeatable performance in demanding environments.

Specification Summary & Compliance

This washer features an ID of 25.04 mm (tolerance 0mm to +0.21mm), OD of 42 mm (tolerance -0.25mm to -0.04mm), and Thickness of 1 mm (tolerance -0.05mm to +0.05mm), manufactured to DIN 5405-3 and ISO 303 specifications. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental directives, ensuring adherence to international regulatory standards for hazardous substances.