S-5909K981 2.125" ID x 2 7/8" OD Washers for Needle-Roller Thrust Bearings

Key Features & Benefits at a Glance

• Exceptional dimensional stability ensures perfect fit and alignment on 2 1/8" shafts, reducing vibration and component wear
• Ultra-precise tolerances across ID, OD, and thickness guarantee consistent performance in high-precision assemblies
• Robust steel construction provides superior strength and durability for demanding mechanical applications
• Optimized thickness control maintains uniform load distribution and prevents fastener loosening
• Full regulatory compliance with RoHS 3 and REACH standards ensures environmental safety and global market acceptance
• Inch-system precision delivers exact specifications for North American and international engineering requirements
• Reliable performance in critical applications where tight tolerances are essential for operational success

Professional Applications & Engineering Value

This precision steel washer solves critical engineering challenges in industrial machinery, automotive systems, and heavy equipment where exact dimensional control is paramount. The ultra-tight tolerances (ID: 0.002" to 0.012", OD: -0.03" to -0.01", Thickness: -0.0025" to 0.0005") ensure perfect seating on 2 1/8" shafts, eliminating play and misalignment that can lead to premature failure. The steel material provides excellent load-bearing capacity and resistance to deformation under stress, making it ideal for high-vibration environments and precision mechanical assemblies. Engineers specify this washer for applications requiring reliable performance in demanding conditions, from manufacturing equipment to transportation systems, where consistent dimensional accuracy directly impacts operational efficiency and safety.

Specification Summary & Compliance

This precision grade steel washer features exact inch-system dimensions: 2.125" ID with 0.002" to 0.012" tolerance, 2 7/8" OD with -0.03" to -0.01" tolerance, and 0.0625" thickness with -0.0025" to 0.0005" tolerance. Manufactured to tight tolerance standards for industrial applications requiring precise fit on 2 1/8" shafts. The component is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting the latest environmental regulations for hazardous substances and ensuring global market acceptance.