S-90044A167 1/2"-13 x 3 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 ensures reliable performance under extreme loads, minimizing failure risks in critical assemblies
- Superior corrosion resistance from black-oxide coating extends service life in harsh industrial environments, reducing maintenance frequency
- Precision Class 3A thread fit provides secure, vibration-resistant connections with consistent engagement in demanding applications
- High hardness rating (Rockwell C37) maintains thread integrity and drive socket shape through repeated installation cycles
- Coarse UNRC threading enables faster assembly and superior performance in materials prone to galling or cross-threading
- Full-threaded design offers maximum grip length and flexibility for variable material thicknesses
- Standard hex drive compatibility with 3/8" tools ensures widespread tool accessibility and efficient installation
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, these black-oxide alloy steel socket head cap screws deliver exceptional performance where standard fasteners fail. The combination of 170,000 psi tensile strength and Rockwell C37 hardness provides reliable clamping force in high-vibration environments, while the Class 3A UNRC coarse threads resist stripping during repeated assembly. The black-oxide surface treatment creates a durable barrier against moisture and chemicals, making these fully threaded fasteners ideal for machinery, equipment manufacturing, and structural applications requiring superior corrosion resistance and long-term reliability under continuous stress conditions.
Specification Summary & Compliance
Manufactured to exacting ASTM A574 specifications with precision Class 3A thread fit and UNRC coarse threading (1/2"-13). Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Features standard socket head profile with right-hand threading and dimensional accuracy maintained throughout the 3-1/2" fully threaded length.
