S-90044A294 4-48 x 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 ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
- Superior wear resistance from Rockwell C37 hardness extends service life and minimizes maintenance needs in demanding environments.
- Precise Class 3A thread fit provides tight tolerances for secure, vibration-resistant assemblies with minimal backlash.
- Black-oxide coating on alloy steel offers enhanced corrosion protection, maintaining integrity in various industrial conditions.
- Fine UNF thread spacing allows for finer adjustments and improved load distribution compared to coarse threads.
- Hex socket drive design enables easy installation in confined spaces with standard tools, boosting assembly efficiency.
- Compliance with ASTM A574, RoHS 3, and REACH ensures adherence to industry standards for safety and environmental regulations.
Professional Applications & Engineering Value
This Black-Oxide Alloy Steel Socket Head Cap Screw is engineered to address common industrial challenges, such as vibration loosening and corrosion in machinery. The 4-48 UNF fine thread with Class 3A fit delivers precise engagement, ideal for applications requiring high clamping force and stability, like automotive assemblies or precision equipment. The partially threaded design allows for controlled fastening in specific zones, reducing stress concentrations. With a 170,000 psi tensile strength and Rockwell C37 hardness, it withstands heavy loads and abrasive conditions, making it suitable for aerospace, manufacturing, and heavy-duty industrial uses where durability and reliability are critical.
Specification Summary & Compliance
This screw features a 4-48 UNF thread with Class 3A fit for high precision and fine spacing, a length of 2 inches, and a partially threaded rod. It meets ASTM A574 specifications for alloy steel socket head cap screws, ensuring consistent quality and performance. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety standards without restricted substances.
