S-99041A147 0.812" ID Square Washers

Key Features & Benefits at a Glance

• Superior load distribution with a wide 2" square design to prevent surface damage and fastener pull-through in demanding applications.
• Enhanced corrosion resistance from the zinc-plated steel construction, extending the washer's service life in harsh industrial environments.
• Precise compatibility with a 0.812" inner diameter, ensuring a perfect fit for standard 3/4" screws and facilitating quick, secure installations.
• Exceptional mechanical strength and deformation resistance, backed by a Rockwell B40 hardness rating for reliable performance under high stress.
• Regulatory peace of mind with full compliance to RoHS 3 and REACH, making them suitable for use in regulated markets and eco-conscious projects.
• Durable and long-lasting material build, combining the strength of steel with a protective coating for a robust, industrial-grade fastener component.

Professional Applications & Engineering Value

This zinc-plated steel square washer is engineered to solve critical challenges in industrial applications where high load-bearing and environmental durability are paramount. The large 2" width provides a significantly larger surface area compared to standard washers, effectively distributing clamping force and preventing damage to soft materials or surfaces. This is essential in construction, heavy machinery, and structural assemblies. The zinc plating offers a robust barrier against oxidation and corrosion, making these heavy-duty washers ideal for outdoor use or in moisture-prone settings. Paired with the consistent 0.812" ID for 3/4" screw size, they ensure a secure fit that minimizes loosening from vibration, a common failure point in dynamic systems.

Specification Summary & Compliance

This square washer features an inner diameter of 0.812" and a width of 2", designed for use with 3/4" screws. The material is zinc-plated steel with a thickness range of 0.225-0.265" and a hardness of Rockwell B40. It is manufactured to standard inch system specifications. This product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free of restricted hazardous substances and safe for industrial use.