S-91131A123 Male and Female Leveling Washers

Key Features & Benefits at a Glance

• 3° maximum angle correction compensates for misalignment in heavy-duty assemblies, reducing stress and preventing joint failure
• Black-oxide steel construction provides excellent corrosion resistance and durability in demanding industrial environments
• Rockwell C25 hardness ensures superior wear resistance and maintains dimensional stability under high load conditions
• Precision inch dimensions (1.312" ID x 2.5" OD) guarantee perfect fit with 1 1/4" screw sizes for reliable fastening performance
• Spherical design with 3" radius enables smooth articulation and even load distribution across mating surfaces
• RoHS 3 and REACH compliance meets international environmental standards for safe use in regulated industries
• Compatible with replacement male washers creates complete spherical washer systems for comprehensive misalignment solutions

Professional Applications & Engineering Value

This spherical washer engineered from black-oxide steel addresses critical alignment challenges in heavy machinery, structural steel connections, and industrial equipment assemblies. The spherical design with 3° maximum angle correction compensates for surface irregularities and angular misalignments that commonly cause premature bolt failure and joint loosening. The Rockwell C25 hardness ensures the washer maintains its precise dimensions and spherical radius under extreme compression loads, while the black-oxide surface treatment provides essential corrosion protection in harsh operating environments. These industrial washers are particularly valuable in applications where perfect perpendicularity cannot be guaranteed, such as in structural steel frameworks, mining equipment, and heavy vehicle assemblies, where they significantly extend service life and reduce maintenance requirements.

Specification Summary & Compliance

This spherical washer features precise inch-system dimensions with Female ID of 1.375" and Male ID of 1.312" for optimal compatibility with 1 1/4" screw sizes. The manufacturing maintains tight thickness tolerances between 0.485"-0.515" for consistent performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and chemical safety. The spherical design follows standard engineering principles for misalignment correction applications, with controlled hardness at Rockwell C25 to maintain structural integrity under operational stresses.