S-90203A637 Length 1 1/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and long-term reliability.
• Efficient self-drilling installation with a No. 3 drill tip that penetrates up to 0.22" thickness, eliminating pre-drilling and saving labor time.
• Excellent thread retention through thread forming design in aluminum and sheet metal, providing secure, vibration-resistant fastening.
• Comfortable and secure drive with a square No. 3 drive and rounded pan head, enabling high torque application without slippage.
• Full-length threading ensures consistent grip along the entire 1-1/4" length, maximizing holding power in various material thicknesses.
• Wide application versatility designed specifically for aluminum and sheet metal, streamlining inventory for multiple industrial uses.
• Durable and reusable right-hand thread design maintains integrity through repeated installations in demanding conditions.

Professional Applications & Engineering Value

These 1/4"-14 thread forming tapping screws are engineered to address common challenges in aluminum and sheet metal assembly, such as material splitting and loose fasteners. The 18-8 stainless steel provides inherent corrosion resistance, reducing maintenance in humid or corrosive settings. The self-drilling tip (No. 3 type) and thread forming method create precise, tight threads without taps, minimizing hole preparation and speeding up production lines. This design ensures strong pull-out resistance and reduces the risk of stripping, making these fully threaded screws a reliable choice for HVAC, automotive, and electronics enclosures where vibration and load are concerns.

Specification Summary & Compliance

These screws adhere to inch system standards with a 1/4" thread diameter and 14 threads per inch, ensuring compatibility with common industrial specifications. The pan head with square drive (No. 3) offers secure installation, while the fully threaded, right-hand design provides consistent performance. Manufactured from 18-8 stainless steel, they meet general industry requirements for corrosion resistance and strength. Compliance includes alignment with common thread forming practices and material standards suitable for aluminum and sheet metal applications, though specific certifications like RoHS should be verified per batch.