S-91128A440 32 mm ID Square Washers

Key Features & Benefits at a Glance

• Enhanced Load Distribution with a 50mm width and square shape, reducing surface pressure and preventing fastener loosening in heavy-duty applications.
• Superior Corrosion Resistance from the black-oxide steel finish, extending service life in harsh industrial environments.
• High Mechanical Strength with Rockwell 15N80 hardness, ensuring durability under high-stress conditions without deformation.
• Precision Fit for M24 Screws with a 32mm inner diameter, providing secure fastening and easy installation in metric assemblies.
• Robust 6.0mm Thickness for added stability and vibration resistance, ideal for machinery and structural applications.
• Compliance with Environmental Standards, meeting RoHS 3 and REACH regulations for safe, sustainable use in global markets.
• Versatile Metric Sizing ensuring compatibility with international engineering specifications and replacement parts.

Professional Applications & Engineering Value

This black-oxide steel square washer is engineered to address critical challenges in industrial fastening, such as uneven load distribution and corrosion-induced failures. Its square design and substantial 50mm width provide a larger bearing surface, effectively dispersing force and minimizing the risk of joint failure in heavy-duty machinery, construction frameworks, and automotive assemblies. The Rockwell 15N80 hardness ensures the washer maintains integrity under repetitive stress, while the black-oxide coating offers reliable protection against rust and wear in humid or abrasive settings. By integrating precise metric dimensions like the 32mm ID for M24 screws, it streamlines installation in global projects, reducing downtime and enhancing the longevity of fastened connections.

Specification Summary & Compliance

This washer features a 32mm inner diameter, 50mm width, and 6.0mm thickness with metric sizing for consistent performance. It adheres to standard manufacturing tolerances and is made from black-oxide steel with a hardness of Rockwell 15N80 for reliable mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU), including exemption 6(a) for lead in steel alloys, and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for industrial use.