S-91274A004 6-32 x 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 for reliable performance in demanding applications, reducing the risk of fastener failure.
- Superior corrosion resistance provided by zinc-flake coating, extending service life in harsh industrial environments.
- Precision Class 3A thread fit ensures tight, secure connections with minimal play, ideal for high-vibration settings.
- High hardness rating (Rockwell C37) enhances wear resistance and durability under repetitive loads.
- Hex drive design allows for easy installation and removal with standard tools, improving assembly efficiency.
- Compliance with major standards including ASME B18.3, ASTM A574, and ASTM B117, guaranteeing quality and reliability.
- RoHS 3 and REACH compliance ensures environmental safety and regulatory adherence for global supply chains.
Professional Applications & Engineering Value
This 6-32 UNC thread socket head cap screw is engineered to address critical challenges in heavy-duty and precision assemblies. Made from zinc-flake-coated alloy steel, it offers excellent resistance to corrosion and wear, making it suitable for automotive, aerospace, and machinery applications where exposure to moisture and chemicals is common. The coarse UNC thread and Class 3A fit provide superior grip and vibration resistance, reducing loosening in dynamic environments. With a hex drive style and standard socket head profile, it ensures quick, tool-friendly installation, streamlining production processes and minimizing downtime in industrial settings.
Specification Summary & Compliance
This screw adheres to precise dimensional standards, including Class 3A thread fit for tight tolerances and UNC coarse threading for robust engagement. It meets ASME B18.3 and ASTM A574 specifications for material and manufacturing quality, along with ASTM B117 for corrosion testing. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for international markets.
