S-93012A122 1.375" ID x 2.5" OD ASME B18.21.1 SAE Washers

Key Features & Benefits at a Glance

• Exceptional corrosion resistance from hot-dipped galvanized steel coating, ensuring long-term reliability in harsh industrial environments
• Optimized load distribution with precise 1.375" ID and 2.5" OD dimensions, preventing surface damage and maintaining joint integrity
• Superior mechanical strength with Rockwell B72 hardness, providing reliable performance under heavy loads and vibration
• Industry-standard compliance with ASME B18.21.1 specifications, guaranteeing dimensional accuracy and interchangeability
• Environmental responsibility through RoHS 3 compliance, meeting strict international regulations for hazardous substances
• Perfect compatibility with 1 1/4" screw sizes, ensuring secure fastening in inch-system applications
• Durable thickness range (0.136-0.192") providing consistent performance across manufacturing tolerances

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these SAE flat washers deliver critical performance where corrosion resistance and load distribution are paramount. The hot-dipped galvanized steel construction provides superior protection against rust and chemical degradation in outdoor, marine, and chemical processing environments. With precise inch system dimensions (1.375" ID × 2.5" OD), these washers effectively distribute clamping force over larger surface areas, preventing material deformation and maintaining bolt preload in heavy machinery, structural steel connections, and equipment assembly. The Rockwell B72 hardness ensures the washer maintains its shape under extreme pressure, while the ASME B18.21.1 compliance guarantees dimensional consistency for reliable installation across industrial maintenance, construction, and manufacturing applications requiring durable flat washer solutions.

Specification Summary & Compliance

This heavy-duty flat washer features precise inch-system dimensions with 1.375" inner diameter and 2.5" outer diameter, manufactured to ASME B18.21.1 standards for dimensional accuracy and performance reliability. The hot-dipped galvanized steel construction provides superior corrosion protection, while the Rockwell B72 hardness ensures mechanical durability. The product is fully RoHS 3 (2015/863/EU) compliant, meeting international environmental regulations for hazardous substance restrictions, making it suitable for global industrial applications requiring certified flat washer solutions.