S-96582A441 2.125" ID x 4.5" OD ASME B18.21.1 USS Washers

Key Features & Benefits at a Glance

• Superior corrosion protection with black-coated steel construction, extending service life in demanding industrial environments
• Optimal load distribution thanks to the large 4.5" OD and 2.125" ID, preventing surface damage and joint loosening
• Enhanced assembly reliability through precise thickness control (0.153-0.213") ensuring consistent performance under heavy loads
• Guaranteed dimensional accuracy with full compliance to ASME B18.21.1 standards for interchangeability
• Environmental responsibility with RoHS 3 and REACH compliance, meeting strict international regulatory requirements
• Heavy-duty compatibility designed for 2" screw sizes in inch-system applications requiring robust fastening solutions
• Versatile industrial application across construction, machinery, and structural assemblies where corrosion resistance is critical

Professional Applications & Engineering Value

These USS flat washers deliver critical engineering value by solving common industrial fastening challenges. The black corrosion-resistant coated steel construction provides exceptional protection against rust and degradation in harsh environments, significantly reducing maintenance costs and downtime. With their large 4.5" OD and precise 2.125" ID, these washers effectively distribute clamping forces over wider surface areas, preventing material deformation and joint failure in heavy machinery, structural steel connections, and industrial equipment. The ASME B18.21.1 compliance ensures dimensional consistency and reliable performance in critical applications where safety and durability are paramount. These industrial washers are particularly valuable in outdoor construction, marine environments, and manufacturing facilities where corrosion resistance and load-bearing capacity determine operational success.

Specification Summary & Compliance

This heavy-duty USS flat washer features precise dimensional specifications including 2.125" inner diameter, 4.5" outer diameter, and thickness ranging from 0.153" to 0.213" for compatibility with 2" screw sizes. Manufactured in accordance with ASME B18.21.1 standards for dimensional accuracy and performance requirements. The product fully complies with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) regulations regarding chemical substances, ensuring environmental responsibility and regulatory compliance for global industrial applications.