S-91655A252 Length 1 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding industrial environments
• Efficient thread-forming installation creates strong, permanent threads in sheet metal without requiring pre-tapped holes
• Enhanced driving stability with No. 2 square drive design that prevents cam-out and provides superior torque transmission
• Secure fastening distribution through integrated flange design that eliminates the need for separate washers
• Quick-start penetration with pointed tip that facilitates precise alignment and reduces installation time
• Full-length threading ensures maximum grip strength along the entire 1-1/2" length for reliable sheet metal connections
• Regulatory compliance assurance with RoHS 3 and REACH standards for environmentally responsible manufacturing

Professional Applications & Engineering Value

These No. 10-12 thread forming tapping screws deliver exceptional performance in sheet metal applications where vibration resistance and structural integrity are critical. The zinc-plated steel construction provides reliable corrosion protection in industrial settings, while the thread forming design (A/AB type) creates precise, tight-fitting threads that won't loosen under stress. The flanged pan head with No. 2 square drive offers superior torque transmission and eliminates the need for additional washers, streamlining assembly processes. The fully threaded configuration ensures maximum holding power across the entire fastener length, making these industrial tapping screws ideal for HVAC systems, electrical enclosures, and metal fabrication projects requiring durable, long-lasting fastening solutions.

Specification Summary & Compliance

These tapping screws feature precise 0.19" thread diameter with 12 threads per inch and Class 2A thread tolerances for consistent performance. The A/AB thread forming type complies with industry standards for self-tapping fasteners, while the 0.423" flange diameter provides optimal load distribution. Manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance requirements, these screws are engineered for compatibility with No. 21 drill bits (0.159" diameter) and maximum drilling thickness of 0.025" in sheet metal applications.