S-98164A424 2-56 x 3/16" ASME B18.3 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 316 Stainless Steel construction and passivated finish, ideal for harsh environments and extended service life
- High mechanical strength and reliability with 70,000 psi tensile strength and Rockwell B55 hardness for demanding applications
- Precise and secure fastening ensured by Class 3A thread fit and UNC coarse thread spacing, reducing the risk of cross-threading
- Efficient installation and removal with a 0.050" hex drive, providing excellent torque transfer and tool engagement
- Full thread engagement along the 3/16" length for maximum grip and load distribution in assembled components
- Compliance with major industry standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and regulatory acceptance
- Versatile rounded button head design offers a low-profile, finished appearance while minimizing snagging in tight spaces
Professional Applications & Engineering Value
Engineered for precision and endurance, these 2-56 UNC thread rounded head screws in 316 Stainless Steel address critical challenges in industrial and marine settings where corrosion and mechanical stress are prevalent. The passivated finish enhances the innate corrosion resistance of the material, making these screws suitable for chemical processing, offshore equipment, and food-grade machinery. The Class 3A thread fit and coarse thread spacing ensure rapid assembly with high vibration resistance, reducing maintenance downtime. Combined with a hex drive for secure tooling, these screws provide reliable fastening in electronics, instrumentation, and automated systems, delivering long-term performance under rigorous operating conditions.
Specification Summary & Compliance
This screw features a 2-56 UNC thread with Class 3A fit and coarse spacing, manufactured to ASME B18.3 specifications for dimensional accuracy. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental and safety standards are met. The inch-system measurements, including a 3/16" length and 0.050" hex drive, provide consistent performance in industrial applications requiring precise, high-strength fasteners.
