S-97715A424 4-40 x 3/16" 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 for long-lasting performance in harsh environments
- Precise Class 3A thread fit ensures secure, vibration-resistant connections in critical assemblies
- High 50,000 psi tensile strength provides reliable load-bearing capacity for demanding applications
- Rockwell B55 hardness maintains thread integrity and prevents stripping during installation
- Hex drive design allows for efficient installation with standard tools while preventing cam-out
- Fully threaded body maximizes engagement depth and distributes stress evenly
- Compliant with RoHS 3 and REACH regulations meets international environmental standards for industrial use
Professional Applications & Engineering Value
These 4-40 UNC thread brass rounded head screws deliver exceptional value in applications where corrosion resistance and electrical conductivity are paramount. The brass material combined with Class 3A thread fit prevents galvanic corrosion while maintaining precise tolerances in electronic enclosures, marine equipment, and plumbing systems. The coarse thread spacing ensures quick assembly and superior holding power in softer materials, while the button head profile provides a low-profile finish that won't snag on components. With 50,000 psi tensile strength and Rockwell B55 hardness, these screws withstand vibration and thermal cycling in industrial machinery, automotive systems, and telecommunications infrastructure without compromising performance.
Specification Summary & Compliance
This rounded head screw features precise 4-40 UNC coarse threading with Class 3A fit per inch system standards, ensuring dimensional accuracy and reliable engagement. The manufacturing process adheres to strict quality controls for head diameter (0.213") and length (3/16") consistency. Compliance includes RoHS 3 (2015/863/EU) with exemption 6(c) for lead in copper alloy and full REACH (EC 1907/2006) adherence, making these screws suitable for regulated industries and international supply chains requiring certified components.
