S-98164A426 2-56 x 5/16" 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, ideal for harsh industrial environments and outdoor applications
- Enhanced durability and strength from Rockwell B55 hardness and 70,000 psi tensile strength, reducing failure risks under stress
- Precise, reliable fastening ensured by Class 3A thread fit and UNC coarse spacing, minimizing loosening in vibration-prone settings
- Easy installation and removal with 0.050" hex drive and rounded button head design, saving time during assembly and maintenance
- Complete thread coverage with fully threaded design, providing consistent grip along the entire 5/16" length
- Long-lasting surface protection through passivated finish, resisting oxidation and extending service life
- Compliance with industry standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and regulatory acceptance
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these 316 stainless steel rounded head screws deliver exceptional performance where corrosion resistance and mechanical reliability are critical. The UNC coarse thread spacing and Class 3A fit provide secure fastening in materials prone to vibration, such as machinery, automotive assemblies, and electronic enclosures. The passivated finish enhances the innate corrosion resistance of 316 stainless steel, making these hex drive screws suitable for marine, chemical processing, and outdoor equipment. With fully threaded design and right-hand thread direction, they offer uniform clamping force and ease of installation, reducing assembly time and maintenance costs in high-volume production environments.
Specification Summary & Compliance
This screw features precision 2-56 UNC threads with Class 3A fit for tight tolerance fastening. Manufactured in compliance with ASME B18.3 specifications, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The 316 stainless steel material ensures consistent performance with a Rockwell B55 hardness and 70,000 psi tensile strength, while the passivated finish provides additional corrosion protection for long-term reliability.
