S-98023A042 1.5" ID x 2.75" OD ASME B18.21.1 SAE Washers

Key Features & Benefits at a Glance

• Exceptional load distribution with 2.75" outer diameter to prevent surface damage and joint loosening under heavy loads
• Superior corrosion protection through zinc yellow-chromate plating that withstands harsh industrial environments
• Maximum durability with Rockwell C38 hardness and Grade 8 classification for high-stress applications
• Precise fit and alignment with 1.5" inner diameter designed specifically for 1 3/8" screw sizes
• Industry-standard compliance meeting ASME B18.21.1 specifications for reliable performance
• Environmental responsibility with REACH compliance for safe use in regulated industries
• Consistent thickness control between 0.136-0.192" for uniform pressure distribution

Professional Applications & Engineering Value

This Grade 8 SAE flat washer delivers critical engineering solutions for industrial applications where fastener failure is not an option. The zinc yellow-chromate plated steel construction provides exceptional corrosion resistance in demanding environments including outdoor equipment, heavy machinery, and structural assemblies. The 1.5" ID ensures perfect compatibility with 1 3/8" fasteners while the 2.75" OD significantly increases bearing surface area, preventing material deformation and maintaining bolt tension in high-vibration settings. With Rockwell C38 hardness, this washer maintains structural integrity under extreme pressure, making it ideal for construction equipment, automotive assemblies, and industrial machinery where Grade 8 performance is essential for safety and reliability.

Specification Summary & Compliance

This heavy-duty flat washer features precise dimensional specifications with 1.5" inner diameter, 2.75" outer diameter, and thickness ranging from 0.136" to 0.192". Manufactured to ASME B18.21.1 standards for dimensional accuracy and performance reliability. The Grade 8 classification ensures superior mechanical properties, while the zinc yellow-chromate plating provides enhanced corrosion protection. Fully compliant with REACH (EC 1907/2006) regulations regarding substance restrictions, making it suitable for use across various industrial sectors with environmental compliance requirements.