S-91864A003 0-80 x 3/8" 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.
- Precision Class 3A thread fit provides superior engagement and vibration resistance in critical assemblies, minimizing loosening over time.
- Black-oxide coating on alloy steel offers enhanced corrosion resistance and a durable, non-reflective finish suitable for harsh environments.
- Fine UNF threads deliver improved clamping force and better load distribution compared to coarse threads, ideal for precision applications.
- Hex socket drive design allows for high-torque installation with standard tools, enabling efficient assembly and disassembly in confined spaces.
- Full threading along the 3/8" length ensures consistent grip and flexibility in adjustment, accommodating various material thicknesses.
- Rockwell C37 hardness combines toughness with machinability, resisting wear and deformation in demanding industrial use.
Professional Applications & Engineering Value
This black-oxide alloy steel socket head cap screw is engineered to address common challenges in precision machinery, automotive, and aerospace sectors where vibration resistance and high tensile strength are critical. The fine UNF threads and Class 3A fit provide secure fastening in thin materials or high-frequency environments, reducing maintenance needs. Its hex drive and fully threaded design facilitate quick installation in tight spaces, while the corrosion-resistant coating extends service life in humid or chemically exposed settings. Ideal for industrial fasteners requiring reliable performance under dynamic loads, this screw ensures dimensional stability and compliance with rigorous engineering standards.
Specification Summary & Compliance
This product adheres to Class 3A thread fit tolerances per UNF standards, ensuring precise thread engagement. It meets ASTM A574 specifications for high-strength socket head cap screws, with full compliance to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious and safety-critical applications.
