S-97715A425 4-40 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 with brass material, ideal for harsh environments and electrical applications
- High-strength performance with 50,000 psi tensile strength and Rockwell B55 hardness for reliable, durable fastening
- Precise thread engagement with Class 3A thread fit ensuring tight tolerances and secure connections
- Easy installation and removal using the 1/16" hex drive, compatible with standard tools for efficient assembly
- Versatile rounded button head design providing a low-profile, smooth finish that reduces snagging and improves safety
- Full threading along the 1/4" length for maximum grip and uniform load distribution in various materials
- Compliance with environmental regulations including RoHS 3 and REACH, meeting industry standards for safe usage
Professional Applications & Engineering Value
These 4-40 UNC brass rounded head screws are engineered to address critical needs in precision assemblies, such as electronics, instrumentation, and machinery where corrosion resistance and electrical conductivity are paramount. The brass material combined with a Class 3A thread fit ensures minimal galling and consistent performance in repetitive disassembly scenarios. The coarse thread spacing and fully threaded design enhance holding power in softer materials, while the rounded button head and hex drive facilitate quick, tool-friendly installation. Ideal for B2B industrial applications, these screws reduce downtime and maintenance costs by providing reliable, long-lasting fastening solutions that meet rigorous quality and compliance standards.
Specification Summary & Compliance
This product adheres to inch system measurements with precise dimensions: 1/4" length, 0.213" head diameter, and 1/16" hex drive size. It features UNC coarse threads with a Class 3A thread fit for high precision and right-hand thread direction. Manufacturing complies with RoHS 3 (2015/863/EU) under exemption 6(c) for lead in copper alloy and REACH (EC 1907/2006) regulations, ensuring environmental safety and industry acceptance.
