S-91251A237 4-48 x 7/16" 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 in high-stress applications, reducing the risk of fastener failure.
- Precision Class 3A thread fit provides superior engagement and vibration resistance, enhancing assembly integrity and longevity.
- Black-oxide coating on alloy steel offers excellent corrosion resistance, extending service life in demanding industrial environments.
- Fine UNF thread design allows for finer adjustments and improved load distribution, ideal for precision assemblies.
- Fully threaded right-hand configuration ensures consistent clamping force and ease of installation with standard hex drivers.
- Rockwell C37 hardness delivers optimal durability and wear resistance, minimizing deformation under repeated use.
- Compact 3/32" hex drive and standard socket head enable secure tool engagement in confined spaces, improving installation efficiency.
Professional Applications & Engineering Value
This 4-48 UNF socket head cap screw is engineered to address critical challenges in precision machinery, automotive, and aerospace assemblies where space constraints and high vibrational loads are common. The black-oxide alloy steel construction combats rust and wear, while the fine thread and Class 3A fit ensure tight tolerances and reliable performance in dynamic conditions. Its fully threaded design provides uniform stress distribution, reducing the risk of loosening and maintenance downtime. Ideal for applications requiring robust industrial fasteners with consistent torque transmission, this screw meets rigorous engineering demands with its high tensile strength and compliance to industry standards.
Specification Summary & Compliance
This socket head cap screw features a 4-48 UNF thread size with Class 3A precision fit and right-hand thread direction, ensuring exact dimensional accuracy per inch system requirements. It conforms to ASTM A574 specifications for high-strength alloy steel fasteners and is verified as RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, supporting environmentally responsible manufacturing practices.
