S-91274A124 10-24 x 1 1/4" 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
- Exceptional tensile strength of 170,000 PSI provides reliable performance in high-stress applications, reducing the risk of fastener failure.
- Superior corrosion resistance from the zinc-flake coating ensures long-term durability in harsh industrial environments, minimizing maintenance needs.
- Precise Class 3A thread fit guarantees secure, vibration-resistant assemblies with consistent clamping force and reduced loosening.
- High hardness (Rockwell C37) offers excellent wear resistance, extending the screw's service life under repetitive loading.
- Partially threaded design with a minimum 7/8" thread length allows for optimal grip in materials without unnecessary threading, simplifying installation.
- Standard hex drive (5/32") enables easy installation and removal with common tools, improving assembly efficiency.
- Compliance with ASME B18.3 and ASTM A574 ensures consistent quality and interchangeability, supporting reliable engineering specifications.
Professional Applications & Engineering Value
This zinc-flake-coated alloy steel socket head cap screw is engineered to address critical challenges in demanding industrial settings. Its 10-24 UNC coarse threads and Class 3A fit provide superior resistance to vibration and shock, making it ideal for machinery, automotive, and heavy equipment applications where reliability is paramount. The high tensile strength (170,000 PSI) and robust Rockwell C37 hardness prevent stripping and deformation under extreme loads, while the zinc-flake coating offers long-lasting protection against corrosion, even in exposed or humid conditions. The partially threaded design ensures precise engagement without over-threading, reducing assembly time and improving structural integrity in fastened joints.
Specification Summary & Compliance
This screw features a 10-24 UNC coarse thread with Class 3A fit for tight tolerances and reliable performance. It meets ASME B18.3 and ASTM A574 specifications, ensuring dimensional accuracy and material consistency. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it is free from hazardous substances, supporting safe and sustainable industrial use.
