S-98023A030 0.344" ID x 0.688" OD ASME B18.21.1 SAE Washers
SAE Washers
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Basic Information
Dimension Parameters
Material & Strength Parameters
Installation & Application Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Exceptional corrosion resistance with zinc yellow-chromate plating, ideal for harsh industrial environments
- Superior load distribution from precise SAE flat design, preventing surface damage and fastener loosening
- High-strength Grade 8 performance with Rockwell C38 hardness for demanding mechanical applications
- Reliable dimensional accuracy with 0.344" ID and 0.688" OD ensuring perfect fit for 5/16" fasteners
- Industry-standard compliance with ASME B18.21.1 specifications for guaranteed quality and interchangeability
- Enhanced durability through controlled thickness (0.051-0.080") for consistent performance under pressure
- Environmental responsibility with REACH compliance, meeting strict European chemical safety standards
Professional Applications & Engineering Value
These Grade 8 SAE flat washers deliver critical engineering solutions where high-strength fastening systems face constant stress and environmental challenges. The zinc yellow-chromate plated steel construction provides superior corrosion protection in manufacturing, automotive, and heavy equipment applications, significantly extending service life in moisture-prone environments. With Rockwell C38 hardness and precise dimensional tolerances, these washers maintain bolt preload, prevent galvanic corrosion, and distribute clamping forces evenly across connected surfaces. The ASME B18.21.1 compliance ensures reliable performance in critical assemblies, from machinery frames to structural supports, where fastener failure is not an option.
Specification Summary & Compliance
This 5/16" SAE flat washer features precise dimensional specifications including 0.344" inner diameter, 0.688" outer diameter, and thickness ranging 0.051-0.080". Manufactured to ASME B18.21.1 standards with Grade 8 strength classification and Rockwell C38 hardness verification. The product is fully REACH compliant (EC 1907/2006) regarding substance restrictions and meets industry standards for zinc yellow-chromate plated steel finish requirements.
