S-90090A251 Length 1 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and extended service life.
• Efficient thread forming with Type A/AB design creates strong, reliable threads in sheet metal without pre-tapping, reducing installation time and tooling.
• Secure, tamper-resistant fastening provided by the one-way drive pan head, preventing unauthorized removal in critical assemblies.
• Optimal material engagement from fully threaded shanks and 12 threads per inch, ensuring maximum holding power in thin sheet metal up to 0.025".
• Simplified installation process with a standard No. 21 drill bit (0.159" diameter), allowing for precise hole preparation and consistent performance.
• Broad industrial compliance meeting RoHS 3 and REACH regulations, ensuring environmental safety and global market acceptability.
• Versatile pan head design offers a low-profile, rounded finish for applications where a smooth surface and good bearing area are required.

Professional Applications & Engineering Value

These No. 10-12 x 1-1/2" 18-8 Stainless Steel Pan Head Tapping Screws are precision-engineered for demanding sheet metal applications, where vibration resistance and material integrity are paramount. The thread forming Type A/AB design displaces material to create robust internal threads, eliminating the need for separate tapping operations and reducing the risk of metal fatigue or strip-out in thin-gauge materials. Manufactured from 18-8 Stainless Steel, they provide excellent resistance to oxidation and corrosive elements, making them suitable for HVAC systems, electronic enclosures, and outdoor equipment. The combination of a one-way drive and fully threaded shank ensures a permanent, high-strength fastening solution that maintains clamp load under dynamic stresses, delivering long-term reliability and reduced maintenance cycles in professional industrial settings.

Specification Summary & Compliance

This screw features a No. 10 size with 12 threads per inch and a 1-1/2" length, designed for use with a No. 21 drill bit (0.159" diameter) in materials up to 0.025" thick. It conforms to standard thread forming Type A/AB specifications for right-hand threading and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe and sustainable usage.