S-97715A439 4-48 x 1/2" 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 brass construction, ideal for harsh environments and electrical applications
- Exceptional thread precision with Class 3A fit for reliable, vibration-resistant assemblies and reduced risk of cross-threading
- High mechanical strength with 50,000 psi tensile strength and Rockwell B55 hardness for durable, long-lasting fastening
- Secure hex drive engagement with 1/16" drive size providing positive torque transmission and reduced tool slippage
- Optimized for fine-thread applications with 4-48 UNF threading offering superior holding power in thin materials
- Low-profile rounded button head design provides a finished appearance while minimizing protrusion in confined spaces
- Full regulatory compliance with RoHS 3 and REACH standards ensures environmental responsibility and global market acceptance
Professional Applications & Engineering Value
These brass rounded head screws with 4-48 UNF fine threading deliver critical performance advantages in precision assemblies where corrosion resistance and electrical conductivity are paramount. The Class 3A thread fit ensures consistent engagement in tapped holes, eliminating play in sensitive instrumentation, electronic enclosures, and marine components. The combination of 50,000 psi tensile strength and Rockwell B55 hardness provides reliable fastening in vibration-prone environments while maintaining the non-sparking properties essential in hazardous locations. The hex drive configuration offers superior torque transmission compared to slotted drives, reducing installation time and preventing damage to the button head profile in high-volume production environments.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 3A thread fit per UNF specifications, ensuring consistent performance across applications. These fully threaded fasteners feature a standard rounded head profile with right-hand thread direction. The product maintains full compliance with RoHS 3 (2015/863/EU) under exemption 6(c) for lead in copper alloys and REACH (EC 1907/2006) regulations, meeting global environmental standards for industrial components.
