S-90399A247 Length 1" Tapping Screws
Tapping Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Washer & Nut
Material & Strength
Temperature & Environment
Installation & Application
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Key Features & Benefits at a Glance
- Superior corrosion resistance with black-phosphate steel construction for extended service life in demanding industrial environments
- Enhanced load distribution through wide truss head design that prevents pull-through and reduces surface stress
- Integrated flat washer eliminates separate washer handling and provides immediate, consistent bearing surface
- Efficient thread forming design creates strong, permanent threads in sheet metal without pre-tapping requirements
- Optimized Phillips No. 2 drive ensures secure tool engagement and reduces cam-out during installation
- Full 1" threading delivers maximum grip length and holding power throughout the entire fastener
- Environmental compliance meets RoHS 3 and REACH standards for global manufacturing applications
Professional Applications & Engineering Value
This No. 10 Phillips truss head tapping screw with integrated flat washer addresses critical challenges in sheet metal assembly operations. The thread forming design (A/AB type) creates precise mating threads in sheet metal up to 0.025" thickness, eliminating the need for separate tapping operations and reducing assembly time. The black-phosphate steel construction provides essential corrosion protection for industrial environments, while the wide truss head profile distributes clamping force over a larger area, preventing material deformation and maintaining structural integrity. The combination of 12 TPI thread pitch and 0.19" thread diameter ensures optimal thread engagement and pull-out resistance, making it ideal for HVAC systems, electrical enclosures, and metal fabrication applications where vibration resistance and long-term reliability are paramount.
Specification Summary & Compliance
This tapping screw features precise 0.19" thread diameter with 12 TPI right-hand threading and Class 2A thread tolerances for consistent performance. The A/AB thread forming specification ensures reliable thread creation in sheet metal applications when used with recommended No. 21 drill bit (0.159" diameter). Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, making these screws suitable for regulated industrial and commercial applications worldwide.
