S-91131A150 Male and Female Leveling Washers

Key Features & Benefits at a Glance

• Superior Angular Correction - Accommodates up to 3° misalignment for precise assembly alignment and reduced stress concentrations
• Exceptional Hardness Rating - Rockwell C48 hardness ensures long-term dimensional stability under heavy loads
• Advanced Corrosion Protection - Black-oxide steel finish provides reliable rust resistance in demanding environments
• Optimized Load Distribution - Spherical design maintains even pressure distribution across mating surfaces
• Precision Dimensional Control - 1.875" female ID and 3.250" OD ensure perfect fit with 1 3/4" fasteners
• Regulatory Compliance Ready - Meets RoHS 3 and REACH standards for global industrial applications
• Heavy-Duty Construction - 0.673"-0.703" thickness provides robust performance in high-stress applications

Professional Applications & Engineering Value

This spherical washer delivers critical engineering solutions for industrial applications where angular misalignment presents significant challenges. The black-oxide steel construction combined with Rockwell C48 hardness ensures exceptional durability in heavy machinery, structural steel connections, and equipment requiring precise load distribution. The washer's spherical geometry allows for up to 3° correction angle, effectively compensating for surface irregularities and manufacturing tolerances that commonly plague industrial assemblies. This design prevents premature fastener failure, reduces maintenance downtime, and extends service life in demanding environments including construction equipment, industrial machinery, and transportation systems where reliable angular misalignment compensation is essential for operational safety and performance.

Specification Summary & Compliance

This precision spherical washer features critical dimensions including 1.875" female ID, 3.250" OD, and thickness range of 0.673"-0.703" with consistent radius measurements of 3.5" for both male and female components. Manufactured to exacting inch system specifications for compatibility with 1 3/4" fasteners. The product maintains full compliance with RoHS 3 (2015/863/EU) under exemption 6(a)-I and meets current REACH (EC 1907/2006) standards (01/17/2023, 233 SVHC), ensuring regulatory acceptance for industrial applications worldwide.