S-91131A024 Male and Female Leveling Washers

Key Features & Benefits at a Glance

• ±3° angular correction compensates for misalignments, reducing stress and preventing fastener failure in uneven surfaces.
• Black-oxide steel construction provides excellent corrosion resistance and a durable, long-lasting finish for harsh industrial environments.
• Rockwell C48 hardness ensures superior strength and wear resistance, maintaining performance under high load and vibration.
• Precision-engineered dimensions (0.156" ID, 0.375" OD) guarantee a perfect fit for No. 4 screws, ensuring reliable load distribution.
• Optimized for maximum load distribution to minimize point loading and protect connected components from damage.
• Enhanced vibration resistance helps maintain joint integrity and prevents loosening in dynamic applications.
• Compatible with replacement male washers for easy system integration and maintenance.

Professional Applications & Engineering Value

This spherical washer is engineered to solve critical alignment challenges in industrial assemblies. The black-oxide steel material offers robust protection against corrosion, while the Rockwell C48 hardness ensures it can withstand significant mechanical stress without deforming. The key engineering value lies in its ability to provide a ±3° angular correction, which is essential for applications where mating surfaces are not perfectly parallel. This feature prevents bolt bending and uneven load distribution, common pain points in heavy machinery, automotive suspensions, and structural frameworks. By accommodating minor misalignments, this washer enhances joint reliability, reduces maintenance downtime, and extends the service life of the entire assembly, making it an indispensable component for precision engineering and vibration-resistant applications.

Specification Summary & Compliance

This washer features precise dimensions including a Female ID of 0.156", Female OD of 0.375", and a thickness range of 0.188"-0.218", designed for a No. 4 screw size. It is manufactured to exacting standards to ensure proper fit and function. The product is fully RoHS 3 (2015/863/EU) compliant under exemption 6(a)-I and is REACH (EC 1907/2006) compliant, meeting the latest regulatory requirements for industrial components.