S-92949A831 10-32 x 4" ASME B18.3, ASTM F879 Stainless Steel Button Head Hex-Drive Screws
Stainless Steel Button Head Hex-Drive 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 corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh environments
- Exceptional thread precision with Class 3A fit ensures reliable, vibration-resistant connections in critical assemblies
- High mechanical strength offering 70,000 psi tensile strength and Rockwell B55 hardness for demanding applications
- Easy installation and removal with 1/8" hex drive and rounded button head design, reducing assembly time
- Full threading along the 4" length provides maximum grip and uniform load distribution
- Compliance with major standards including ASME B18.3, RoHS 3, and REACH for guaranteed quality and safety
- Fine UNF thread spacing delivers enhanced holding power and precise adjustment capabilities
Professional Applications & Engineering Value
Engineered for industrial and mechanical systems, this 10-32 UNF fully threaded screw addresses common challenges like corrosion, vibration loosening, and assembly inefficiency. The 18-8 stainless steel material combined with a passivated finish provides long-term durability in moist or chemical-exposed settings, reducing maintenance costs. Its Class 3A thread fit and fine thread spacing ensure tight tolerances for precision equipment, aerospace components, and automated machinery. The rounded button head and hex drive allow for quick, tool-friendly installation, making it a reliable choice for OEMs and maintenance teams seeking consistent performance in heavy-duty fastening applications.
Specification Summary & Compliance
This screw adheres to Class 3A thread fit per UNF standards, with a length of 4" and full threading for precise engagement. It meets ASME B18.3 specifications (ASTM F879) and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material integrity. The manufacturing process guarantees dimensional accuracy, including head diameter (0.361") and thread diameter (0.19"), supporting reliable performance in regulated industries.
