S-98119A122 1.77" ID x 3.25" OD ASTM F436 Type 1 Structural Washers

Key Features & Benefits at a Glance

• Maximum corrosion protection through hot-dipped galvanized steel coating for extended service life in harsh environments
• Precise dimensional fit with 1.77" ID and 3.25" OD ensuring proper alignment and load distribution for 1 5/8" screws
• Exceptional hardness rating of Rockwell C38 provides superior resistance to deformation under heavy loads
• Industry-standard compliance with ASTM F436 Type 1 specifications guarantees consistent quality and performance
• Variable thickness tolerance (0.178-0.280") accommodates manufacturing variations while maintaining sealing effectiveness
• Environmental regulation compliance with REACH standards ensures safe use across industrial applications
• Heavy-duty construction capable of withstanding extreme pressure and vibration in demanding installations

Professional Applications & Engineering Value

These hot-dipped galvanized steel flat washers deliver critical engineering solutions where corrosion resistance and structural integrity are paramount. The zinc coating provides sacrificial protection against rust and chemical degradation, making them ideal for outdoor construction, marine environments, and industrial facilities exposed to moisture. With their ASTM F436 Type 1 certification, these washers maintain consistent hardness and dimensional stability under sustained loads, preventing joint loosening in structural steel connections, heavy machinery assemblies, and infrastructure projects. The precise 1.77" ID and 3.25" OD dimensions ensure optimal load distribution for 1 5/8" screws, reducing surface pressure and preventing material damage in wood, metal, and concrete applications.

Specification Summary & Compliance

Manufactured to ASTM F436 Type 1 standards with dimensional specifications including 1.77" inner diameter, 3.25" outer diameter, and thickness range of 0.178-0.280". The hot-dipped galvanized steel construction achieves Rockwell C38 hardness for superior mechanical properties. Compliant with REACH (EC 1907/2006) regulations regarding substance restrictions (updated 06/14/2023, 235 SVHC), ensuring environmental and workplace safety standards are met for industrial distribution and use.