S-98119A044 1.375" ID x 2.5" OD ASTM F436 Type 1; ASME B18.21.1 Structural Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with hot-dipped galvanized steel coating, ideal for harsh industrial environments
• Exceptional load distribution from precise 1.375" ID and 2.5" OD dimensions, preventing surface damage
• Enhanced durability with Rockwell C38 hardness rating, maintaining structural integrity under heavy loads
• Reliable performance meeting ASTM F436 Type 1 and ASME B18.21.1 standards for consistent quality
• Perfect fit compatibility designed specifically for 1 1/4" screw sizes, ensuring secure fastening
• Environmental compliance with RoHS 3 and REACH regulations, safe for regulated industries
• Optimized thickness range (0.136-0.177") providing ideal balance between strength and flexibility

Professional Applications & Engineering Value

Engineered for demanding industrial applications, this flat washer addresses critical challenges in structural fastening systems. The hot-dipped galvanized steel construction provides exceptional corrosion resistance, making it ideal for outdoor installations, marine environments, and chemical processing facilities where moisture and corrosive elements are concerns. The ASTM F436 Type 1 certification ensures consistent performance in high-stress applications, distributing loads effectively across surfaces to prevent material deformation and joint failure. With precise 1.375" ID x 2.5" OD dimensions specifically designed for 1 1/4" screw sizes, this washer maintains proper alignment and prevents loosening in heavy machinery, structural steel connections, and industrial equipment assemblies where vibration and dynamic loads are common challenges.

Specification Summary & Compliance

This flat washer features inch system dimensions with 1.375" inner diameter and 2.5" outer diameter, with thickness ranging from 0.136" to 0.177". Manufactured to exacting standards including ASTM F436 Type 1 for hardened steel washers and ASME B18.21.1 for general purpose applications. The product demonstrates full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory adherence for industrial procurement requirements.