S-94070A113 4-40 x 3/4" ASME B18.6.3 Brass Pan Head Phillips Screws
Brass Pan Head Phillips 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 thanks to brass construction, ensuring long-term reliability in harsh environments
- Excellent electrical conductivity for applications requiring grounding or electrical connections
- High tensile strength of 50,000 psi provides reliable fastening performance in demanding mechanical applications
- Rockwell B40 hardness maintains thread integrity and prevents stripping during installation
- Class 2A thread fit ensures smooth assembly and consistent performance across multiple installations
- No. 1 Phillips drive offers secure tool engagement and reduces cam-out during tightening operations
- Fully threaded design provides maximum grip length and uniform load distribution
Professional Applications & Engineering Value
These 4-40 UNC brass pan head Phillips screws deliver exceptional performance in electrical enclosures, instrumentation, and precision assemblies where corrosion resistance and reliable conductivity are critical. The brass material prevents galvanic corrosion when mating with dissimilar metals, while the coarse UNC threading ensures rapid installation and secure fastening in various substrates. The rounded pan head profile provides a low-profile finish that won't snag on wires or components, making them ideal for industrial equipment, commercial applications, and electronic assemblies requiring repeated maintenance access. The combination of 50,000 psi tensile strength and Rockwell B40 hardness ensures these fasteners maintain clamping force under vibration and thermal cycling conditions.
Specification Summary & Compliance
Manufactured to ASME B18.6.3 specifications with Class 2A thread fit tolerance for consistent performance. Features 4-40 UNC coarse threads in right-hand direction with 3/4" length and fully threaded design. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in regulated industries and international markets.
