S-97715A427 4-40 x 3/8" 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 with brass construction, ideal for harsh environments and reducing replacement costs.
- Exceptional tensile strength of 50,000 psi ensures reliable, high-load performance in demanding assemblies.
- Precise Class 3A thread fit provides tighter tolerances for secure, vibration-resistant fastening.
- Fully threaded 4-40 UNC coarse design offers maximum grip and holding power across the entire length.
- Convenient 1/16" hex drive and rounded button head allows for easy installation and a low-profile, finished appearance.
- Enhanced durability with Rockwell B55 hardness, resisting wear and deformation during repeated use.
- Compliance with RoHS 3 and REACH regulations ensures environmental safety and suitability for regulated industries.
Professional Applications & Engineering Value
Engineered for precision, this 4-40 UNC brass rounded head screw addresses critical industrial challenges such as galvanic corrosion and mechanical failure. The brass material inherently resists rust and oxidation, making it perfect for electrical components, marine hardware, and plumbing systems where moisture is a concern. Its Class 3A thread fit and coarse UNC threading ensure quick assembly and robust performance in high-vibration environments, reducing the risk of loosening. The combination of a 50,000 psi tensile strength and Rockwell B55 hardness provides reliable fastening in applications from machinery to consumer electronics, enhancing product longevity and safety while the hex drive simplifies maintenance.
Specification Summary & Compliance
This screw adheres to UNC thread standards with a Class 3A thread fit for precise dimensional accuracy. It is manufactured with a fully threaded, right-hand coarse thread design, measuring 3/8" in length. Compliance includes RoHS 3 (2015/863/EU) with exemption 6(c) for lead in copper alloy and REACH (EC 1907/2006), ensuring it meets stringent environmental and safety regulations for industrial use.
