S-91515A400 Length 1 1/4" Tapping Screws
Tapping Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
Installation & Application
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Key Features & Benefits at a Glance
- Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding environments
- Enhanced material penetration through self-drilling tip design that eliminates pre-drilling requirements
- Increased load distribution with wide flanged truss head design for superior holding power
- Optimized driving efficiency with Phillips No. 2 drive for secure installation and reduced cam-out
- Excellent thread engagement through thread-forming BSD design that creates strong, permanent fastenings
- Maximum material compatibility specifically engineered for steel and sheet metal applications up to 0.098" thickness
- Full-length threading ensures consistent holding strength along the entire 1-1/4" length
Professional Applications & Engineering Value
These No. 8 zinc-plated steel tapping screws deliver exceptional performance in steel and sheet metal applications where reliability is critical. The thread-forming BSD design creates permanent, vibration-resistant fastenings without requiring pre-tapped holes, significantly reducing installation time and labor costs. The integrated No. 2 drill tip penetrates materials up to 0.098" thick, while the flanged truss head provides superior clamping force and prevents pull-through in thin materials. With 18 TPI right-hand threading and Phillips drive compatibility, these screws offer consistent performance across industrial assembly lines, HVAC installations, and construction projects where durable fastening solutions are essential for structural integrity.
Specification Summary & Compliance
Manufactured to precise inch system specifications with 0.164" thread diameter and 18 TPI threading throughout the 1-1/4" length. Features BSD thread-forming technology and complies with industry standards for tapping screws. The zinc-plated steel construction meets corrosion resistance requirements for industrial applications, while the flanged truss head design and Phillips No. 2 drive ensure reliable installation performance. Engineered for maximum drilling thickness of 0.098" in steel and sheet metal substrates.
