S-97715A403 2-56 x 1/4" Brass Button Head Hex-Drive Screws
Brass 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 from high-quality brass construction, ideal for harsh environments and extended service life
- Exceptional holding power with a high 50,000 psi tensile strength, ensuring reliable and secure fastening in demanding applications
- Precise and secure thread engagement due to the Class 3A thread fit, minimizing the risk of cross-threading and ensuring consistent performance
- Easy and efficient installation with the 0.050" hex drive, providing a positive grip and reducing the risk of tool slippage
- Enhanced durability and material integrity from Rockwell B55 hardness, offering excellent resistance to wear and deformation
- Maximum grip and fastening strength from the fully threaded design, distributing load evenly along the entire 1/4" length
- Compliance with major environmental regulations including RoHS 3 and REACH, ensuring suitability for global markets and sensitive applications
Professional Applications & Engineering Value
These 2-56 UNC brass rounded head screws are engineered to solve critical challenges in precision assembly and industrial maintenance. The brass material inherently resists corrosion, making these fasteners ideal for electrical components, marine equipment, and plumbing systems where moisture is a concern. The coarse UNC thread and Class 3A fit provide rapid assembly with high resistance to vibration loosening, a common failure point in machinery. The rounded button head and hex drive design offer a low-profile, aesthetically pleasing finish while allowing for high-torque installation without damaging the screw head. This combination of corrosion resistance, high tensile strength, and precise threading delivers reliable performance in applications demanding both mechanical integrity and long-term durability.
Specification Summary & Compliance
This product features a 2-56 UNC coarse thread with a precision Class 3A thread fit for superior dimensional accuracy. The fastener is fully threaded along its 1/4" length. It is manufactured to be RoHS 3 (2015/863/EU) compliant under exemption 6(c) for lead in copper alloy and is REACH (EC 1907/2006) compliant.
