S-92423A439 4-40 x 1/2" FF-S-86, NAS1352N04-8, SAE AMS5737 High-Strength A286 Stainless Steel Socket Head Screws
High-Strength A286 Stainless 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 strength-to-weight ratio with 160,000 psi tensile and 120,000 psi yield strength for reliable performance in demanding applications
- Superior corrosion resistance due to A286 stainless steel material and passivated finish, extending service life in harsh environments
- Precise Class 3A thread fit ensures secure fastening with minimal vibration loosening in critical assemblies
- Optimized hex drive engagement with 3/32" drive size providing maximum torque transmission and reduced stripping risk
- Full regulatory compliance with RoHS 3 and REACH standards for global industrial use without environmental restrictions
- Standard socket head profile allows easy installation in confined spaces with common hex tools
- Coarse UNRC threading enables rapid assembly and superior resistance to cross-threading damage
Professional Applications & Engineering Value
Engineered for high-stress applications where failure is not an option, these A286 stainless steel socket head cap screws deliver exceptional performance in aerospace, automotive, and heavy machinery sectors. The passivated finish provides an additional protective layer against chemical exposure and atmospheric corrosion, while the Rockwell C33 hardness maintains structural integrity under extreme loads. The fully threaded design with Class 3A UNRC threads ensures uniform stress distribution and prevents joint relaxation in vibrating environments. These 4-40 thread screws are particularly valuable in precision equipment where space constraints require the compact socket head design while maintaining high torque capability through the hex drive system.
Specification Summary & Compliance
Manufactured to exacting Class 3A thread tolerances with UNRC coarse threading and fully threaded configuration. Complies with Fed. Spec. FF-S-86, NAS1352N04-8, and SAE AMS5737 specifications for quality assurance. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance standards. Dimensions include 1/2" length, 0.183" head diameter, and 3/32" hex drive size for standardized installation.
