S-92620A869 3/4"-16 x 1 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 load-bearing capacity with 150,000 psi tensile strength, ideal for high-stress industrial assemblies.
- Superior corrosion resistance from zinc yellow-chromate plating, extending service life in harsh environments.
- High hardness rating (Rockwell C33) ensures excellent wear resistance and durability under repetitive use.
- Precise Class 2A thread fit for smooth installation and reliable engagement in tapped holes.
- Fully threaded UNF fine thread design provides maximum grip and vibration resistance in critical applications.
- External hex drive and hex head allow for high-torque tightening with standard tools, improving assembly efficiency.
- Compliance with major industry standards including ASME B18.2.1 and SAE J429, ensuring consistent quality and interchangeability.
Professional Applications & Engineering Value
This Grade 8 hex head screw is engineered to address demanding industrial challenges where failure is not an option. The steel construction combined with 150,000 psi tensile strength and Rockwell C33 hardness provides a robust solution for heavy machinery, structural frames, and high-vibration equipment. The 3/4"-16 UNF fine threads offer superior resistance to loosening under dynamic loads, while the zinc yellow-chromate plating defends against corrosion in outdoor or chemically exposed settings. Its fully threaded and external hex drive design ensures easy installation and maximum clamping force, making it a reliable choice for automotive, construction, and manufacturing sectors requiring high-strength bolts with long-term performance.
Specification Summary & Compliance
This fastener meets Class 2A thread fit tolerances for precise engagement and is manufactured in accordance with ASME B18.2.1 and SAE J429 specifications. It is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring adherence to environmental and safety regulations. The inch system measurements, including 1 1/4" length and right-hand thread direction, provide compatibility with standard industrial components.
