S-91251A475 3/8"-24 x 5" 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 industrial applications.
- Superior corrosion resistance with black-oxide coating, extending service life in harsh environments.
- Precision Class 3A thread fit ensures tight, secure fastening with minimal backlash in critical assemblies.
- High hardness rating (Rockwell C37) provides excellent wear resistance and durability under repeated use.
- Fine UNF thread design offers improved vibration resistance and better load distribution compared to coarse threads.
- Hex socket drive allows for high torque application and easy installation in confined spaces.
- Compliance with ASTM A574 guarantees consistent quality and mechanical properties for engineering applications.
Professional Applications & Engineering Value
These black-oxide alloy steel socket head cap screws deliver critical performance advantages in demanding industrial environments. The combination of 170,000 PSI tensile strength and Rockwell C37 hardness ensures reliable fastening in heavy machinery, automotive assemblies, and precision equipment where vibration resistance and structural integrity are paramount. The fine UNF threads with Class 3A fit provide superior clamping force distribution and prevent loosening in dynamic applications. The black-oxide surface treatment offers enhanced corrosion protection without compromising dimensional accuracy, making these socket head screws ideal for outdoor equipment, manufacturing fixtures, and aerospace components requiring both strength and environmental resistance.
Specification Summary & Compliance
This 3/8"-24 UNF socket head cap screw features precise Class 3A thread tolerances with partial threading and meets ASTM A574 manufacturing specifications. The product maintains compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for global industrial applications requiring restricted substance control.
