S-92620A305 5/16"-24 x 1 3/4" 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
- Maximum load-bearing capacity with 150,000 psi tensile strength for critical structural applications
- Superior corrosion resistance through zinc yellow-chromate plating in harsh industrial environments
- Precise thread engagement with Class 2A fit UNF fine threads for vibration-resistant connections
- Exceptional durability from Grade 8 steel with Rockwell C33 hardness for long service life
- Easy installation and removal with standard external hex drive and right-hand threading
- Full thread coverage along the 1-3/4" length for maximum grip and load distribution
- Industry compliance assurance meeting ASME B18.2.1 and SAE J429 specifications
Professional Applications & Engineering Value
These Grade 8 hex head screws deliver exceptional performance in demanding industrial applications where failure is not an option. The combination of 150,000 psi tensile strength and Rockwell C33 hardness ensures reliable performance in heavy machinery, construction equipment, and automotive assemblies subjected to extreme stress and vibration. The zinc yellow-chromate plating provides superior corrosion protection in outdoor or chemically aggressive environments, while the UNF fine threads with Class 2A fit maintain precise clamping force under dynamic loading conditions. These fully threaded screws offer maximum engagement surface for superior load distribution, making them ideal for critical joints in structural frameworks, engine components, and industrial machinery where vibration resistance and long-term reliability are paramount.
Specification Summary & Compliance
This 5/16"-24 hex head screw features precise Class 2A thread fit with UNF fine threading (24 threads per inch) and right-hand direction. The fastener maintains dimensional accuracy per ASME B18.2.1 specifications and meets SAE J429 Grade 8 requirements for material composition and mechanical properties. The product complies with industry standards for heavy-duty applications, ensuring consistent performance and reliability in professional engineering contexts.
