S-91251A385 5/16"-24 x 1 1/4" ASTM A574 Alloy Steel Socket Head Screws
Alloy Steel Socket 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 170,000 psi provides superior resistance to mechanical loads and prevents fastener failure in demanding applications.
- Precision Class 3A thread fit ensures tight, secure mating with nuts and tapped holes, reducing the risk of loosening under vibration.
- Black-oxide finish on alloy steel offers enhanced corrosion resistance for improved durability in various industrial environments.
- Fine UNF thread profile allows for finer adjustments and a more secure hold compared to coarse threads, ideal for precision assemblies.
- Hardness of Rockwell C37 provides excellent wear resistance, maintaining the integrity of the screw head and drive during repeated use.
- Fully threaded design offers consistent clamping force along the entire length, ensuring uniform load distribution.
- Compliance with RoHS 3 and REACH ensures the product meets stringent environmental and safety standards for global industrial use.
Professional Applications & Engineering Value
This 5/16"-24 UNF Socket Head Cap Screw is engineered to address critical challenges in high-stress assemblies. The black-oxide alloy steel construction, combined with a fine thread and Class 3A fit, delivers reliable performance in applications where vibration resistance and precise alignment are paramount. Its fully threaded body ensures maximum grip in machinery, automotive components, and precision equipment, preventing joint failure. The hex drive design allows for high-torque installation with standard tools, facilitating efficient assembly in confined spaces. Ideal for industrial fastening, this screw provides long-term reliability, reducing maintenance needs and downtime.
Specification Summary & Compliance
This socket head cap screw features a 5/16"-24 UNF thread with a Class 3A precision fit, ensuring tight tolerances for secure fastening. Manufactured to ASTM A574 specifications, it guarantees consistent quality and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, adhering to environmental and safety standards for industrial use worldwide.
