S-97349A431 Length 1 1/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ensuring long-term reliability in humid or demanding environments.
• Efficient thread forming design creates strong, permanent threads in plastic materials without pre-tapping, reducing assembly time and tooling costs.
• Optimized pan head with Phillips drive provides a flush finish and secure torque transmission during installation, minimizing cam-out risks.
• Precise dimensional compatibility with No. 29 drill bits (0.136" diameter) ensures proper hole fit and prevents material cracking in plastic substrates.
• Full threading along the 1-1/4" length delivers maximum grip and uniform stress distribution for enhanced load-bearing capacity.
• Compliance with RoHS 3 and REACH regulations guarantees safe use in industrial and consumer products without hazardous substance restrictions.
• Right-hand thread direction and blunt tip facilitate straightforward alignment and reduce the risk of cross-threading during automated or manual installation.

Professional Applications & Engineering Value

These No. 8 x 1-1/4" tapping screws are specifically engineered for plastic applications, where traditional fasteners may strip or loosen over time. The 18-8 stainless steel material offers excellent resistance to oxidation and chemical exposure, making them ideal for outdoor equipment, electronic enclosures, and automotive components. The thread forming (DST) technology displaces plastic material to create tight, vibration-resistant threads without generating chips, eliminating cleanup and ensuring consistent clamp load. The Phillips pan head design allows for low-profile installations while providing ample drive engagement, reducing worker fatigue in high-volume assembly lines. By integrating these screws, engineers achieve reliable joint integrity, lower total cost of ownership, and compliance with international environmental standards.

Specification Summary & Compliance

This product meets standard inch measurements with a thread diameter of 0.164" and approximately 18 threads per inch, ensuring compatibility with common plastic thicknesses. Manufactured as DST-type thread forming screws with a pan head profile and Phillips No. 2 drive, they adhere to industry-accepted dimensional tolerances. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted substances for safe industrial and commercial use.