S-91655A249 Length 1 1/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, ensuring long-term durability in industrial environments
• Effortless installation through thread-forming design that creates strong, permanent threads without pre-tapping
• Enhanced driving stability with No. 2 square drive that prevents cam-out and provides superior torque transmission
• Increased bearing surface from the flanged pan head design, distributing load evenly and preventing material pull-through
• Quick penetration with pointed tip and fully threaded shank for faster assembly in sheet metal applications
• Precise fitment with Class 2A thread tolerance ensuring consistent performance across multiple installations
• Regulatory compliance meeting RoHS 3 and REACH standards for safe use in global manufacturing operations

Professional Applications & Engineering Value

These No. 10 tapping screws are specifically engineered for demanding sheet metal applications where vibration resistance and permanent fastening are critical. The zinc-plated steel construction provides excellent corrosion protection in harsh industrial environments, while the thread forming design creates stronger threads than conventional cutting screws by displacing material rather than removing it. The flanged pan head with square drive offers superior torque transmission and eliminates the need for separate washers, reducing assembly time and component count. The fully threaded right-hand configuration and pointed tip enable quick starts and smooth penetration through sheet metal up to 0.025" thickness, making them ideal for HVAC systems, electrical enclosures, and automotive assemblies where reliability is paramount.

Specification Summary & Compliance

These A/AB type thread forming screws feature precise Class 2A thread tolerances with No. 10-12 thread specification and 1-1/4" length. The manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory compliance. Designed for use with No. 21 drill bit (0.159" diameter), these screws maintain consistent performance across industrial applications while meeting international standards for hazardous substance restrictions.