S-92949A860 5/16"-24 x 1 1/8" 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
- Exceptional corrosion resistance with 18-8 stainless steel construction and passivated finish, ensuring longevity in harsh environments.
- Superior load-bearing capability thanks to 70,000 psi tensile strength and Rockwell B55 hardness for reliable performance under stress.
- Precise, secure fastening with fine UNF threading and Class 3A fit, minimizing the risk of loosening in high-vibration applications.
- Efficient installation and removal using the hex drive design, providing excellent torque transmission and reducing tool slippage.
- Full thread engagement along the entire 1-1/8" length for maximum grip and uniform stress distribution.
- Compliance with industry standards including ASME B18.3, ensuring consistent quality and interchangeability.
- Environmentally responsible manufacturing with RoHS 3 and REACH compliance, meeting global regulatory requirements.
Professional Applications & Engineering Value
This 18-8 stainless steel rounded head screw is engineered to address critical challenges in industrial settings where corrosion, vibration, and high tensile loads are common. The passivated finish enhances the natural corrosion resistance of stainless steel, making it ideal for applications in chemical processing, marine equipment, and outdoor machinery. The fine UNF threading and Class 3A fit provide a tight, precise connection that resists loosening under dynamic loads, essential for assembly lines, automotive components, and heavy machinery. Combined with the hex drive and rounded button head, it offers both aesthetic appeal and functional reliability, ensuring easy maintenance and long-term performance in demanding environments.
Specification Summary & Compliance
This screw features a 5/16"-24 UNF fine thread with Class 3A fit for high precision and strength. It meets ASME B18.3 specifications for dimensional consistency and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free of hazardous substances and suitable for global industrial use.
