S-90128A111 4-48 x 1/2" 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 for reliable performance in high-stress applications
- Superior corrosion resistance with zinc-plated alloy steel construction, extending service life in harsh environments
- Precise Class 3A thread fit ensures tight, secure fastening with minimal risk of loosening
- Fine UNF thread design provides improved vibration resistance and better load distribution
- Fully threaded shank allows for maximum grip length and adjustable positioning
- Hex socket drive enables high-torque installation with reduced risk of cam-out
- Consistent hardness at Rockwell C37 maintains dimensional stability under heavy loads
Professional Applications & Engineering Value
These 4-48 UNF socket head cap screws deliver critical performance advantages for precision assembly applications where space constraints and high strength requirements coexist. The zinc-plated alloy steel construction provides essential corrosion protection while maintaining the 170,000 psi tensile strength needed for demanding mechanical systems. The Class 3A fine threads offer superior engagement in tapped holes, reducing the likelihood of cross-threading while providing excellent vibration resistance in dynamic applications. The hex socket drive design allows for compact installation in confined spaces where traditional wrench access is limited, making these fasteners ideal for machinery, automotive components, and precision equipment assemblies requiring reliable, high-strength fastening solutions.
Specification Summary & Compliance
Manufactured to exacting standards with Class 3A thread fit precision and UNF fine thread specifications. These 1/2" length socket head cap screws comply with ASTM A574 manufacturing standards for high-strength fasteners. The product meets RoHS 3 (2015/863/EU) compliance for restricted substances and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and workplace safety. The inch system measurement provides compatibility with North American machinery and equipment specifications.
