S-90054A255 Length 2 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in demanding industrial environments
• Enhanced installation efficiency through external hex/slotted dual-drive system, accommodating multiple tool types
• Optimized thread-forming design creates permanent, vibration-resistant threads in sheet metal without requiring pre-tapped holes
• Integrated flange design provides wider bearing surface, distributing clamp load evenly and preventing material damage
• Full threading along 2-1/2" length ensures maximum engagement strength throughout the entire fastener
• Precision-engineered No. 10-12 thread configuration delivers reliable performance in sheet metal up to 0.025" thickness
• Environmental compliance assurance with RoHS 3 and REACH standards, meeting global regulatory requirements

Professional Applications & Engineering Value

These zinc-plated steel tapping screws are engineered specifically for sheet metal applications where reliable fastening and corrosion resistance are critical. The thread forming technology eliminates the need for pre-tapped holes, creating stronger, vibration-resistant connections by displacing material rather than removing it. This A/AB type tapping screw with its fully threaded design ensures maximum pull-out strength across the entire 2-1/2" length, making it ideal for HVAC systems, electrical enclosures, and metal fabrication where joint integrity is paramount. The flanged hex head combines the installation torque capability of an external hex with the load distribution benefits of a washer, preventing material deformation while accommodating both hex drivers and slotted screwdrivers for versatile installation options.

Specification Summary & Compliance

This No. 10-12 x 2-1/2" tapping screw features a 0.19" thread diameter with 12 threads per inch in right-hand orientation. Manufactured to precise dimensional standards with Class 2A thread fit for reliable engagement. The screw is designed for use with No. 21 drill bit (0.159" diameter) and accommodates maximum material thickness of 0.025". Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in global markets.