S-5909K976 3.75" ID x 4.625" OD Washers for Needle-Roller Thrust Bearings

Key Features & Benefits at a Glance

• Perfect shaft compatibility - Precisely designed for 3 3/4" shafts to ensure secure fit and prevent equipment misalignment
• Exceptional dimensional accuracy - Tight ID tolerance (0.002" to 0.017") guarantees consistent performance in demanding applications
• Optimized load distribution - Large 4.625" OD provides superior surface coverage to protect components from damage
• Reliable thickness control - Consistent 0.03125" thickness with minimal variation ensures predictable performance under pressure
• Environmental compliance assurance - Meets RoHS 3 and REACH standards for safe use in regulated industries
• Durable steel construction - High-strength material provides long-lasting performance in industrial environments
• Precision engineering - Tight OD tolerance (-0.03" to -0.01") ensures proper seating and alignment in assembly

Professional Applications & Engineering Value

This precision steel washer addresses critical engineering challenges in industrial machinery and equipment assembly. The exact 3.75" ID specification ensures perfect compatibility with standard 3 3/4" shaft diameters, eliminating play and reducing vibration-induced wear. The 4.625" OD provides maximum bearing surface area, distributing loads effectively to prevent surface deformation and extend component lifespan. Manufactured from high-quality steel material, these industrial washers maintain structural integrity under heavy loads and harsh operating conditions. The controlled 0.03125" thickness with tight tolerances ensures consistent spacing and alignment in precision assemblies, making them ideal for machinery, automotive, and heavy equipment applications where reliability is paramount.

Specification Summary & Compliance

This precision steel washer features exact dimensional specifications including 3.75" ID (tolerance: 0.002" to 0.017"), 4.625" OD (tolerance: -0.03" to -0.01"), and 0.03125" thickness (tolerance: -0.00125" to 0.00075"). The product is manufactured to inch system standards and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in applications requiring strict environmental compliance.