S-91205A158 6-32 x 2" ASME B18.3, ASTM A574 Alloy Steel Thread-Locking Socket Head Screws
Alloy Steel Thread-Locking 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 vibration resistance with integrated Nylon Patch thread locker, maintaining secure fastening in temperatures from -70° to 250° F
- Exceptional strength and durability from Black-Oxide Alloy Steel, providing 170,000 psi tensile strength and Rockwell C37 hardness for heavy-duty applications
- Precise and reliable threading with UNC Class 3A fit, ensuring tight, accurate connections and reducing the risk of cross-threading in coarse thread spacing
- Enhanced corrosion resistance due to the black-oxide coating, extending service life in harsh industrial environments
- Optimized for high-torque installation featuring a standard socket head with 7/64" hex drive, allowing for easy access and secure tightening in confined spaces
- Versatile partial threading design enabling controlled clamping force and simplified alignment in assembly operations
- Compliance with major industry standards including ASME B18.3 and ASTM A574, guaranteeing consistent quality and performance
Professional Applications & Engineering Value
This Black-Oxide Alloy Steel Socket Head Cap Screw is engineered to address critical challenges in demanding industrial settings, such as machinery, automotive, and aerospace assemblies. The Nylon Patch thread locker effectively counters vibration-induced loosening, a common failure point in dynamic applications, while the UNC Class 3A coarse threads facilitate quick installation and high clamp load retention. The partially threaded rod design allows for precise grip length control, minimizing stress concentration. With a 170,000 psi tensile strength and robust Rockwell C37 hardness, it withstands extreme mechanical stresses, ensuring long-term reliability in high-temperature or corrosive environments where fastener integrity is paramount.
Specification Summary & Compliance
This screw adheres to UNC Class 3A thread fit for precise dimensional accuracy and features a coarse thread spacing with a minimum thread length of 1 inch. Manufactured in compliance with ASME B18.3 and ASTM A574 specifications, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring safety and regulatory adherence for global industrial use.
