S-91205A624 3/8"-16 x 1" 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
- Exceptional vibration resistance with permanent nylon patch thread locker that maintains secure fastening from -70° to 250°F
- Superior tensile strength of 170,000 psi ensures reliable performance in high-stress industrial applications
- Precise Class 3A thread fit provides optimal engagement and reduces the risk of cross-threading during installation
- Enhanced corrosion protection through black-oxide coating on alloy steel for increased durability in demanding environments
- Optimized drive efficiency with standard hex socket and 5/16" drive size for secure tool engagement and reduced cam-out
- Full thread engagement capability with completely threaded shank design for maximum holding power across the entire length
- Industry-standard compliance meeting ASME B18.3 and ASTM A574 specifications for guaranteed quality and interchangeability
Professional Applications & Engineering Value
This black-oxide alloy steel socket head cap screw delivers critical performance where vibration resistance and high tensile strength are paramount. The permanent nylon patch thread locker effectively prevents loosening in dynamic applications from automotive assemblies to heavy machinery, maintaining clamp load integrity across a wide temperature range (-70° to 250°F). Engineered with Class 3A UNC coarse threads, these screws provide superior engagement in both metals and plastics while the Rockwell C37 hardness ensures excellent wear resistance. The combination of 170,000 psi tensile strength and hex drive socket design makes these fasteners ideal for high-stress applications requiring reliable, repeated disassembly and reassembly without performance degradation.
Specification Summary & Compliance
Manufactured to precise Class 3A thread fit with UNC coarse threads (3/8"-16) and compliant with ASME B18.3 dimensional standards. The black-oxide alloy steel construction meets ASTM A574 material specifications, ensuring consistent mechanical properties. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making these screws suitable for global industrial applications requiring strict chemical substance control.
