S-91515A750 Length 1 1/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, ensuring long-term reliability in harsh industrial environments
• Enhanced load distribution from the wide truss head and integrated flange, reducing surface damage and preventing pull-through
• Efficient self-drilling capability with No. 3 tip design, eliminating pre-drilling and saving installation time in steel and sheet metal up to 1/4" thick
• Maximum thread engagement through full threading, providing exceptional holding power and vibration resistance in assembled components
• Secure and stable fastening with thread forming (BSD) design, creating strong, permanent threads without chip removal
• Optimized drive performance using Phillips No. 3 drive, allowing for controlled torque application and reduced cam-out risk
• Compliance with environmental standards via RoHS 3, ensuring safe use in regulated industries and global markets

Professional Applications & Engineering Value

These 1/4"-14 zinc-plated steel flanged truss head tapping screws are engineered to address common challenges in steel and sheet metal fabrication. The thread forming (BSD) design eliminates the need for separate tapping operations, reducing labor costs and potential misalignment issues. The integrated flange and wide truss head distribute clamping force over a larger area, minimizing sheet distortion and improving joint integrity in thin-gauge materials. With a No. 3 drilling tip, these screws penetrate up to 1/4" thick materials efficiently, making them ideal for HVAC systems, electrical enclosures, and automotive assemblies where speed and reliability are critical. The zinc plating provides a durable barrier against rust, extending service life in demanding conditions.

Specification Summary & Compliance

These screws feature a 1/4"-14 thread with right-hand direction and fully threaded shank, adhering to standard inch measurements for consistent performance. Manufactured as BSD type thread forming tapping screws, they comply with industry-recognized specifications for reliable fastening in metal applications. The product is RoHS 3 (2015/863/EU) Compliant, meeting stringent environmental regulations for hazardous substance restrictions, ensuring suitability for global supply chains and eco-conscious manufacturing processes.