S-92620A911 7/8"-9 x 2 1/2" 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
- Maximum load-bearing capacity with 150,000 psi tensile strength, ideal for heavy machinery and structural applications.
- Superior corrosion resistance provided by zinc yellow-chromate plating, extending service life in harsh environments.
- High hardness rating of Rockwell C33 ensures excellent wear resistance and reduced deformation under stress.
- Easy installation and removal with external hex drive and coarse UNC threading, minimizing assembly time.
- Reliable thread engagement due to Class 2A fit and full threading, preventing loosening in high-vibration settings.
- Compliance with industry standards including ASME B18.2.1 and SAE J429, ensuring consistent quality and safety.
- Environmentally responsible manufacturing with RoHS 3 and REACH compliance, meeting global regulatory requirements.
Professional Applications & Engineering Value
This Grade 8 hex head screw is engineered for demanding industrial applications where failure is not an option. The steel construction combined with zinc yellow-chromate plating offers robust protection against rust and chemical exposure, making it suitable for outdoor construction, heavy equipment assembly, and automotive frameworks. The coarse UNC threading and external hex drive allow for quick, secure fastening in materials prone to vibration, reducing maintenance downtime. With a tensile strength of 150,000 psi and full threading, it distributes load evenly, preventing shear failures in critical joints. Ideal for use in structural steel connections and high-stress machinery, this fastener delivers long-term reliability and performance under extreme conditions.
Specification Summary & Compliance
This product features precise Class 2A thread fit and adheres to UNC coarse thread standards for consistent performance. It meets ASME B18.2.1 and SAE J429 specifications for dimensional accuracy and mechanical properties. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material restrictions are upheld.
