S-90077A155 Length 1 1/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in demanding industrial environments.
• Efficient, tool-flexible installation enabled by the dual Phillips/Slotted drive, accommodating common screwdrivers and reducing assembly time.
• Strong, reliable thread-forming engagement with the A/AB type and 18 TPI design, creating durable threads in sheet metal without pre-tapping.
• Full-length threading for maximum grip across the entire 1-1/4" length, ensuring secure fastening and vibration resistance in thin materials.
• Optimized for precision drilling in sheet metal up to 0.025" thickness using a No. 32 drill bit, minimizing material stress and breakage.
• Pan head design for a low-profile, secure fit, providing a larger bearing surface and reducing the risk of head stripping during torque application.
• Compliance with major environmental regulations including RoHS 3 and REACH, ensuring safe, sustainable use in global supply chains.

Professional Applications & Engineering Value

These No. 6 zinc-plated steel tapping screws are precision-engineered for sheet metal applications where reliability and speed are critical. The thread-forming design eliminates the need for separate tapping operations, cutting labor costs and reducing the risk of cross-threading in thin-gauge metals. Made from robust zinc-plated steel, they resist corrosion in humid or outdoor settings, maintaining clamp load and joint integrity. The combination of a Phillips/Slotted drive and fully threaded shank ensures quick, tool-flexible installation and maximum pull-out strength, making them ideal for HVAC ductwork, electronic enclosures, and automotive panels where vibration resistance is essential. Their compliance with RoHS and REACH standards further supports their use in regulated industries, providing peace of mind for OEMs and maintenance teams.

Specification Summary & Compliance

This No. 6 x 1-1/4" tapping screw features a 0.138" thread diameter with 18 TPI and a right-hand thread direction, conforming to standard thread-forming specifications for A/AB type screws. The zinc-plated steel material and pan head design ensure consistent performance, while the product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting environmental and safety requirements for industrial use.