S-90198A182 Length 1 1/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial environments and outdoor applications.
• Efficient thread forming design creates strong, permanent threads in sheet metal without pre-tapping, reducing installation time and tooling needs.
• Flush, low-profile installation with a standard 82° flat head and Phillips No. 2 drive for a clean finish and easy, secure fastening.
• Full threading along the 1-1/4" length ensures maximum grip and holding power across the entire material thickness.
• Precision-engineered dimensions including 0.138" thread diameter and 18 TPI provide reliable, vibration-resistant connections in sheet metal.
• Compliance with RoHS 3 and REACH regulations guarantees safe, environmentally responsible materials for global supply chains.
• Optimized for 0.025" maximum drilling thickness with a pointed tip for quick starting and reduced risk of material damage.

Professional Applications & Engineering Value

These 316 stainless steel thread forming screws are engineered to solve common challenges in sheet metal fabrication, such as strip-out and corrosion-induced failure. The Phillips flat head design with an 82° countersink angle allows for a flush mount, eliminating protrusions that can snag or compromise enclosures. Made from grade 316 stainless steel, they offer exceptional resistance to chlorides and acids, making them perfect for marine, chemical processing, and food industry equipment. The thread forming (Type A/AB) tapping method displaces material rather than cutting it, resulting in zero chip generation and stronger thread engagement that withstands vibration and thermal cycling. This combination of corrosion-resistant material and fully threaded construction ensures long-term reliability in demanding industrial screw applications, reducing maintenance costs and downtime.

Specification Summary & Compliance

This No. 6 x 1-1/4" tapping screw features a right-hand thread with a diameter of 0.138" and approximately 18 threads per inch, adhering to standard inch measurement tolerances for consistent performance. The flat head profile is designed for standard countersinking, and the screw is fully threaded for uniform load distribution. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring the absence of restricted hazardous substances. Manufactured for use with a No. 32 drill bit (0.116" diameter), it is specified for sheet metal applications up to 0.025" thickness, providing reliable fastening in accordance with industrial standards for thread forming screws.