S-94209A490 4-40 x 1/2" Tapping Screws
Tapping 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 black-coated steel construction for extended service life in harsh environments
- Enhanced torque transmission through Torx Plus IP10 drive system, reducing cam-out and tool wear
- Reliable thread forming capability with Tri-Lobe shank design for secure fastening in aluminum, brass, and copper
- Optimized for soft materials with UNC coarse threading providing excellent pull-out resistance
- Consistent installation performance with fully threaded blunt tip design for uniform engagement
- Environmental compliance assurance meeting RoHS 3 and REACH standards for sustainable manufacturing
- Precision length tolerance (-0.03" to 0") ensuring reliable fit and consistent assembly results
Professional Applications & Engineering Value
These 4-40 UNC Tri-Lobe tapping screws are specifically engineered for challenging applications in aluminum, brass, and copper components where traditional fasteners often fail. The black corrosion-resistant coated steel construction provides essential protection against environmental degradation, while the Tri-Lobe shank design creates strong, permanent threads in soft materials without chip formation. The Torx Plus IP10 drive system delivers exceptional torque transfer efficiency, preventing stripping during high-torque installations common in automated assembly lines. This combination of thread forming technology and premium drive system ensures reliable performance in electronics enclosures, HVAC systems, and precision machinery where vibration resistance and long-term integrity are critical.
Specification Summary & Compliance
Manufactured to precise dimensional standards with UNC coarse threading and Class 2A thread tolerance, these fasteners ensure consistent performance across production runs. The 1/2" length maintains tight tolerance control (-0.03" to 0") for reliable assembly. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations guarantees these components meet the latest international standards for hazardous substance restrictions, making them suitable for global supply chains and environmentally conscious manufacturing operations.
