S-91864A019 6-32 x 5/16" ASTM A574 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 corrosion resistance with black-oxide coating for extended service life in demanding environments
- Superior strength-to-weight ratio from alloy steel construction with 170,000 psi tensile strength for critical applications
- Precise thread engagement with Class 3A fit ensuring reliable, vibration-resistant fastening connections
- Optimized drive efficiency through hex socket design providing superior torque transmission and strip resistance
- Enhanced durability with Rockwell C37 hardness maintaining structural integrity under repeated stress
- Broad compatibility with UNC coarse thread profile facilitating quick assembly in various materials
- Regulatory compliance assurance meeting ASTM A574, RoHS 3, and REACH standards for global industrial use
Professional Applications & Engineering Value
These black-oxide alloy steel socket head cap screws deliver exceptional performance in high-stress industrial applications where reliability is paramount. The 6-32 UNC coarse thread configuration provides superior holding power in metals and engineered plastics, while the Class 3A thread fit ensures precise engagement without cross-threading risks. The hex socket drive allows for high-torque installation in confined spaces, making these fasteners ideal for machinery, automotive assemblies, and precision equipment. The black-oxide surface treatment offers corrosion protection without dimensional changes, maintaining the 170,000 psi tensile strength and Rockwell C37 hardness required for demanding mechanical applications where fastener failure is not an option.
Specification Summary & Compliance
Manufactured to exacting inch system measurements with 5/16" length and Class 3A thread fit tolerance for precision assembly. These fully threaded socket head cap screws conform to UNC coarse thread standards with right-hand thread direction. Compliance includes ASTM A574 specification for alloy steel socket head cap screws, RoHS 3 (2015/863/EU) for restricted substances, and REACH (EC 1907/2006) regulations for chemical safety, ensuring suitability for global industrial markets and environmentally conscious manufacturing operations.
