S-92620A266 1"-14 x 6 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
- Exceptional tensile strength of 150,000 psi ensures reliable performance in the most demanding heavy-duty applications, reducing the risk of fastener failure.
- Superior corrosion resistance from zinc yellow-chromate plating extends service life in harsh industrial environments, minimizing maintenance and replacement costs.
- High hardness rating (Rockwell C33) provides excellent wear resistance and durability, maintaining thread integrity under high stress.
- Extra fine 1"-14 thread with Class 2A fit offers precise engagement and vibration resistance, ideal for applications requiring secure fastening.
- Partially threaded design allows for controlled clamping force and prevents over-tightening, ensuring consistent joint integrity.
- External hex head design enables easy installation and removal with standard tools, improving assembly efficiency.
- Full compliance with ASME B18.2.1 and SAE J429 standards guarantees consistent quality and interchangeability for engineering projects.
Professional Applications & Engineering Value
This Grade 8 hex head screw is engineered to address critical challenges in heavy machinery, structural steel connections, and high-vibration environments. The extra fine thread (1"-14) provides superior resistance to loosening under dynamic loads, while the zinc yellow-chromate plating offers robust protection against corrosion in outdoor or chemically exposed settings. With a 150,000 psi tensile strength and Rockwell C33 hardness, it maintains structural integrity in construction, mining, and transportation equipment where failure is not an option. The partially threaded configuration ensures optimal stress distribution, making it ideal for bolted joints requiring precise clamp load control.
Specification Summary & Compliance
This fastener features a Class 2A thread fit for consistent assembly tolerance and UNS thread type compatibility. Manufacturing adheres to ASME B18.2.1 and SAE J429 specifications for dimensional accuracy and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in regulated industries.
