S-94744A511 0.812" ID x 1.375" OD ASME B18.21.1 ASME Washers

Key Features & Benefits at a Glance

• Exceptional Load Distribution - The 1.375" outer diameter provides superior surface area to prevent joint loosening and material damage under high stress.
• Premium Corrosion Resistance - Zinc-plated steel construction offers reliable protection against rust and environmental degradation in demanding industrial settings.
• Guaranteed Mechanical Strength - Grade 8 classification ensures consistent performance in high-vibration applications requiring maximum fastener reliability.
• Precision Fit for 3/4" Fasteners - 0.812" inner diameter maintains perfect alignment with standard screw sizes while preventing installation errors.
• Optimized Thickness for Stability - 0.090-0.112" thickness range delivers ideal compression characteristics without compromising assembly integrity.
• Verified Hardness Performance - Rockwell C38 hardness rating ensures dimensional stability and resistance to deformation under extreme pressure.
• Regulatory Compliance Assurance - Meets international environmental standards including RoHS 3 and REACH for global supply chain compatibility.

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these Grade 8 flat washers deliver critical performance in construction equipment, machinery assembly, and structural frameworks where vibration resistance is paramount. The zinc-plated steel construction provides essential corrosion protection in harsh environments, while the precise 0.812" ID ensures perfect alignment with 3/4" screws, eliminating installation issues. The Rockwell C38 hardness maintains dimensional integrity under extreme clamping forces, preventing washer failure in high-stress bolted connections. These ASME B18.21.1 compliant washers are specifically designed to address common engineering challenges including joint relaxation, surface damage prevention, and load distribution optimization across critical assemblies.

Specification Summary & Compliance

This heavy-duty flat washer features precise dimensional specifications including 0.812" inner diameter, 1.375" outer diameter, and 0.090-0.112" thickness range. Manufactured to ASME B18.21.1 standards with Grade 8 strength classification and Rockwell C38 hardness, ensuring consistent performance in demanding applications. The product maintains full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making it suitable for global industrial distribution and use in regulated industries.