S-91131A160 Male and Female Leveling Washers

Key Features & Benefits at a Glance

• Superior misalignment compensation with a 3° maximum correction angle for precise alignment in demanding installations
• Exceptional load distribution through spherical design that minimizes stress concentration on mating surfaces
• Enhanced corrosion resistance with black-oxide steel construction for extended service life in harsh environments
• Reliable mechanical performance with Rockwell C48 hardness maintaining dimensional stability under heavy loads
• Precision dimensional compatibility with 2.125" female ID designed for 2" screw size applications
• Comprehensive regulatory compliance meeting RoHS 3 and REACH standards for global industrial use
• Optimized thickness control between 0.735"-0.765" ensuring consistent performance in assembly stacks

Professional Applications & Engineering Value

This heavy-duty spherical washer addresses critical alignment challenges in industrial machinery, construction equipment, and structural applications where surface irregularities cause mounting stress. The black-oxide steel construction provides essential corrosion protection while maintaining the Rockwell C48 hardness needed for sustained performance under vibration and dynamic loading conditions. The precisely engineered 3° correction angle compensates for surface misalignments that would otherwise lead to premature fastener failure or uneven load distribution. With its 2.125" ID compatibility for 2" screw systems, this washer ensures proper seating while the spherical interface redistributes forces radially, making it ideal for applications requiring both precision alignment and maximum load distribution in inch-based measurement systems.

Specification Summary & Compliance

Manufactured to precise dimensional tolerances with female ID of 2.125", male ID of 2.062", and consistent thickness between 0.735"-0.765". The spherical washer design features matching 3.5" radii on both male and female components for optimal surface contact. Compliant with RoHS 3 (2015/863/EU) under exemption 6(a)-I for lead as steel alloying element and REACH (EC 1907/2006) regulations current as of January 2023. Engineered for use with 2" screw sizes in inch measurement systems, delivering reliable performance within the specified 3° maximum correction angle while maintaining Rockwell C48 hardness specifications.