S-93413A317 0.688" ID x 1.75" OD ASME B18.21.1 Oversized Washers

Key Features & Benefits at a Glance

• Exceptional load distribution with 1.75" outer diameter to prevent surface damage and material embedment
• Superior corrosion resistance through black protective coating for extended service life in harsh environments
• Maximum strength reliability with Grade 8 classification and Rockwell C38 hardness for heavy-duty applications
• Precise fastener alignment with 0.688" inner diameter ensuring perfect fit for 5/8" screws
• Consistent performance manufactured to ASME B18.21.1 standards for dimensional accuracy and quality
• Enhanced safety compliance meeting RoHS 3 and REACH regulations for industrial use
• Optimal thickness control between 0.170-0.195" for reliable spacing and vibration resistance

Professional Applications & Engineering Value

These Grade 8 USS flat washers deliver critical engineering solutions where corrosion resistance and maximum strength are paramount. The black corrosion-resistant coated steel construction protects against environmental degradation in outdoor infrastructure, marine applications, and industrial machinery. With precise 5/8" screw compatibility and ASME B18.21.1 compliance, these washers prevent joint loosening under extreme vibration and distribute loads effectively across surfaces. The Rockwell C38 hardness ensures dimensional stability under high clamping forces, making them ideal for structural steel connections, heavy equipment assembly, and critical bolted joints where failure is not an option.

Specification Summary & Compliance

Manufactured to ASME B18.21.1 standards with dimensional specifications including 0.688" ID, 1.75" OD, and thickness range of 0.170-0.195". These USS flat washers feature Grade 8 strength classification with Rockwell C38 hardness for superior mechanical properties. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental safety and regulatory acceptance for industrial procurement.