S-92620A846 3/4"-10 x 2 1/4" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws
High-Strength Grade 8 Steel Hex Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Exceptional tensile strength of 150,000 PSI ensures reliable performance in high-stress applications, preventing fastener failure.
- Superior corrosion resistance from zinc yellow-chromate plating extends service life in harsh or outdoor environments.
- High hardness rating (Rockwell C33) provides excellent wear resistance and durability under heavy loads.
- Coarse UNC threading allows for faster installation and reduced risk of cross-threading in industrial assemblies.
- Full threading along the 2 1/4" length offers maximum grip and adjustability across the entire fastener.
- External hex drive design enables high torque application with standard tools, ensuring secure tightening.
- Compliance with major industry standards including ASME B18.2.1 guarantees consistent quality and interchangeability.
Professional Applications & Engineering Value
Engineered for demanding industrial applications, this Grade 8 hex head screw combines high-strength steel construction with a protective zinc yellow-chromate plating to combat corrosion in challenging environments like construction, heavy machinery, and automotive assemblies. The 3/4"-10 UNC coarse thread and Class 2A thread fit ensure rapid, reliable installation with reduced susceptibility to stripping, while the fully threaded design provides uniform clamping force. Its 150,000 PSI tensile strength and Rockwell C33 hardness make it ideal for structural connections where vibration resistance and long-term integrity are critical, minimizing maintenance needs and downtime.
Specification Summary & Compliance
This fastener features precise Class 2A thread fit and adheres to UNC coarse thread standards for consistent performance. It is manufactured in compliance with ASME B18.2.1 and SAE J429 Grade 8 specifications, ensuring dimensional accuracy and mechanical properties. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental and safety regulations for use in various markets.
