S-94744A609 1.313" ID x 2.25" OD ASME B18.21.1 ASME Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance from zinc plating, extending service life in demanding environments
• Optimized load distribution with a large 2.25" OD, preventing surface damage and joint loosening
• Precise fit for 1 1/4" screws with a 1.313" ID, ensuring secure and stable fastening assemblies
• Robust durability provided by steel construction, capable of withstanding high-stress applications
• Guaranteed dimensional consistency through compliance with ASME B18.21.1 specifications
• Environmental and regulatory compliance with RoHS 3 and REACH, ensuring safe and sustainable usage
• Versatile industrial suitability due to inch system measurements, fitting standard equipment and replacement needs

Professional Applications & Engineering Value

Engineered for demanding industrial environments, these zinc-plated steel flat washers address critical challenges in machinery assembly, structural frameworks, and heavy equipment maintenance. The zinc plating provides a sacrificial layer that significantly enhances corrosion resistance, reducing failure risks in humid or chemically exposed settings. Their substantial outer diameter (2.25" OD) effectively distributes clamping force over a wider area, which prevents bolt head embedding, minimizes material fatigue, and maintains joint integrity under dynamic loads. Conforming to the ASME B18.21.1 standard, these washers deliver reliable performance in 1 1/4" screw applications, making them indispensable for construction, automotive, and manufacturing sectors where precision and longevity are paramount.

Specification Summary & Compliance

This flat washer features an Inside Diameter (ID) of 1.313", Outside Diameter (OD) of 2.25", and Thickness ranging from 0.146" to 0.174", designed specifically for use with 1 1/4" screws. Manufactured in accordance with ASME B18.21.1, it ensures precise dimensional tolerances and consistent quality. The product is fully RoHS 3 (2015/863/EU) compliant under exemption 6(a) for lead in steel alloys and is REACH (EC 1907/2006) compliant as of January 17, 2023, meeting all applicable substance restrictions.