S-90128A117 4-48 x 1" 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 ensures reliable performance under high-stress conditions, reducing the risk of fastener failure.
- Class 3A thread fit provides superior precision and tighter tolerances for secure, vibration-resistant connections in critical assemblies.
- Zinc-plated alloy steel construction offers excellent corrosion resistance, extending service life in harsh industrial environments.
- Partially threaded design with fine thread spacing allows for precise adjustment and secure fastening in applications requiring controlled clamp load.
- Socket head with 3/32" hex drive enables easy installation in confined spaces using standard tools, improving assembly efficiency.
- Rockwell C37 hardness ensures high durability and resistance to wear, maintaining thread integrity over repeated use.
- Compliance with ASTM A574, RoHS 3, and REACH guarantees adherence to industry standards and environmental regulations for safe, reliable sourcing.
Professional Applications & Engineering Value
This 4-48 UNF socket head cap screw is engineered to address common industrial challenges, such as vibration loosening and corrosion in precision equipment. The zinc-plated alloy steel material provides robust protection against environmental factors, while the fine thread spacing and Class 3A thread fit enhance grip strength in high-vibration applications like machinery, automotive assemblies, and electronic enclosures. Its partially threaded design allows for optimal load distribution, reducing stress concentration and preventing joint failure. Ideal for precision fastening solutions requiring consistent performance, this screw ensures long-term reliability in demanding settings, from manufacturing to aerospace, where exact tolerances and 170,000 PSI tensile strength are critical.
Specification Summary & Compliance
This screw features a Class 3A thread fit with precise dimensional accuracy, adhering to UNF fine thread standards and inch system measurements. It meets ASTM A574 specifications for high-strength socket head cap screws and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material integrity for industrial use.
