S-90315A551 Length 1 1/4" Tapping Screws

Key Features & Benefits at a Glance

• Corrosion-resistant 18-8 stainless steel construction ensures long-lasting performance in harsh industrial environments, reducing replacement costs and downtime.
• Thread forming (Type A/AB) tapping method creates strong, secure threads in sheet metal without the need for pre-drilling, saving time and labor in assembly.
• Oval head with Phillips No. 3 drive provides a flush, finished appearance and reliable torque transfer, minimizing cam-out and tool slippage.
• Fully threaded 1-1/4" length offers maximum grip and holding power in materials up to 0.025" thickness, ideal for various sheet metal gauges.
• Precise No. 12 screw size with 11 threads per inch delivers consistent, vibration-resistant fastening critical for durable mechanical assemblies.
• Compliance with RoHS 3 and REACH regulations guarantees safe, environmentally responsible use in global industrial supply chains.
• 82° countersink angle and pointed tip facilitate easy, self-centering installation for faster, more accurate assembly operations.

Professional Applications & Engineering Value

These 18-8 stainless steel oval head Phillips tapping screws are engineered to address common challenges in sheet metal fabrication, where corrosion resistance and installation efficiency are paramount. The thread forming technology eliminates the need for separate tapping operations, reducing assembly steps and preventing material fatigue by cold-forming threads that resist loosening under vibration. The fully threaded design ensures uniform stress distribution, while the oval head sits flush for a clean, professional finish in HVAC, electronics enclosures, and automotive panels. By combining stainless steel durability with self-tapping efficiency, these screws lower total cost of ownership by minimizing maintenance and streamlining production workflows in industrial settings.

Specification Summary & Compliance

This No. 12 x 1-1/4" screw features a 0.216" thread diameter with 11 threads per inch and fully threaded shank, manufactured to standard thread forming (Type A/AB) specifications for sheet metal. The oval head profile and Phillips No. 3 drive ensure compatibility with common industrial tools. Compliance is verified with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to environmental and safety standards for industrial components.