S-90410A106 4-40 x 1/4" 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 410 stainless steel construction, ensuring long-term reliability in harsh industrial environments.
- Efficient thread cutting capability with Type F design, creating precise threads in brass, cast iron, and sheet metal without pre-tapping.
- Enhanced driving stability through Phillips No. 1 drive, reducing cam-out and improving installation speed in high-volume assembly.
- Optimized material penetration with coarse UNC threading and blunt tip, minimizing cracking in brittle substrates like cast iron.
- Full regulatory compliance with RoHS 3 and REACH standards, meeting global environmental and safety requirements for industrial applications.
- Versatile application range across multiple materials, reducing inventory needs by using one screw type for brass, cast iron, and sheet metal projects.
- Consistent dimensional accuracy with Class 2A thread tolerances, ensuring reliable fit and reduced assembly failures.
Professional Applications & Engineering Value
These 4-40 UNC thread cutting tapping screws deliver exceptional engineering value by solving common fastening challenges in metal fabrication and industrial assembly. The 410 stainless steel composition provides excellent stress resistance while the coarse thread pitch and Type F tapping design enable direct installation into brass fittings, cast iron housings, and sheet metal enclosures without separate tapping operations. The fully threaded configuration ensures maximum grip length, while the Phillips drive facilitates rapid installation with standard tools. This combination eliminates the need for multiple fastener types, reduces labor costs, and prevents thread stripping in soft metals - making these tapping screws ideal for high-volume manufacturing environments where reliability and efficiency are critical.
Specification Summary & Compliance
These screws maintain Class 2A thread tolerances per UNC standards with 4-40 thread size and coarse spacing. Manufacturing follows Type F thread cutting screw specifications with right-hand threading and 1/4" length. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental safety standards are met for industrial use.
