S-91274A197 1"-8 x 2" ASME B18.3, ASTM A574, ASTM B117 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
- Superior corrosion resistance with zinc-flake coating, ideal for harsh industrial environments and outdoor applications.
- Exceptional tensile strength of 170,000 PSI ensures reliable performance under high-stress and heavy-duty conditions.
- Precise Class 3A thread fit guarantees secure, vibration-resistant assemblies with minimal risk of loosening.
- High hardness (Rockwell C37) provides excellent wear resistance and durability for long-term use.
- Fully threaded design allows for maximum grip and adjustability across the entire 2" length.
- 3/4" hex drive socket head enables easy installation and high torque application with standard tools.
- Compliance with major standards including ASME B18.3 and ASTM A574 ensures consistent quality and interchangeability.
Professional Applications & Engineering Value
Engineered for demanding industrial applications, this socket head cap screw delivers critical performance where failure is not an option. The zinc-flake-coated alloy steel construction provides a robust barrier against corrosion, significantly extending service life in machinery, automotive, and construction equipment exposed to moisture and chemicals. Its 1"-8 UNC coarse thread and Class 3A fit facilitate quick assembly while maintaining tight tolerances, reducing the risk of strip-out and ensuring reliable fastening in high-vibration environments. The fully threaded design offers versatile clamping force distribution, making it an ideal choice for heavy-duty fasteners in structural frames, presses, and other high-load assemblies.
Specification Summary & Compliance
This screw features a 1"-8 UNC coarse thread with a precision Class 3A thread fit, ensuring excellent engagement and dimensional accuracy. It is manufactured in compliance with ASME B18.3 and ASTM A574 specifications, and the coating meets ASTM B117 salt spray test requirements. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to environmental and safety regulations for industrial use.
