S-98180A130 0.406" ID x 0.812" OD ASME B18.21.1 SAE Washers

Key Features & Benefits at a Glance

• Exceptional strength and durability with Grade 8 classification and Rockwell C38 hardness, ensuring reliable performance in high-stress applications
• Superior corrosion resistance provided by zinc-flake coating, extending service life in harsh industrial environments
• Precise dimensional accuracy with 0.406" ID and 0.812" OD, ensuring perfect fit for 3/8" fasteners and consistent load distribution
• Industry-standard compliance with ASME B18.21.1 specifications, guaranteeing interchangeability and quality assurance
• Environmental regulation compliance with RoHS 3 and REACH standards, making them suitable for global industrial supply chains
• Optimized thickness range (0.055-0.065") providing ideal compression characteristics without compromising structural integrity
• Heavy-duty construction specifically engineered for demanding applications requiring maximum load-bearing capacity and vibration resistance

Professional Applications & Engineering Value

This Grade 8 SAE flat washer delivers exceptional engineering value through its zinc-flake coated steel construction and precise manufacturing. The combination of Rockwell C38 hardness and heavy-duty Grade 8 classification addresses critical industrial challenges including joint relaxation, vibration-induced loosening, and surface damage in high-torque applications. The 3/8" size with exact inner and outer diameters ensures optimal load distribution across fastened surfaces, preventing material deformation in machinery, structural assemblies, and automotive systems. The zinc-flake coating provides superior protection against corrosion in challenging environments, making these industrial washers ideal for outdoor equipment, manufacturing machinery, and transportation applications where reliability is paramount.

Specification Summary & Compliance

Manufactured to exact ASME B18.21.1 specifications with precise dimensions: 0.406" ID, 0.812" OD, and thickness range of 0.055-0.065". The washer features Rockwell C38 hardness and meets Grade 8 strength requirements for heavy-duty applications. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations ensures suitability for international industrial markets and environmentally conscious manufacturing operations.