S-90190A191 Length 1/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in demanding industrial environments.
• Efficient, high-torque installation enabled by the No. 2 Phillips drive, reducing tool slippage and assembly time.
• Excellent material displacement and strong, reliable threads through thread forming technology, ensuring vibration resistance and high clamp load in sheet metal.
• Wide bearing surface and low-profile design of the standard pan head provides secure fastening without sinking into the material.
• Optimal thread engagement and pull-out strength with a fully threaded, pointed tip and 15 TPI, designed for precise fastening in thin materials up to 0.025".
• Guaranteed dimensional accuracy and interchangeability as a standard A/AB type tapping screw, ensuring consistent performance in repetitive assembly.
• Safe for regulated industries with full compliance to RoHS 3 and REACH environmental standards.

Professional Applications & Engineering Value

This No. 8-15 x 1/4" zinc-plated steel tapping screw is engineered to solve critical challenges in sheet metal assembly. Its thread forming design eliminates the need for a pre-tapped hole, creating strong, clean threads in ductile materials like steel or aluminum sheets without generating chips. This prevents contamination in sensitive assemblies and reduces labor costs. The combination of a Phillips pan head and the specified No. 29 drill bit (0.136" diameter) ensures a streamlined process for creating secure, flush connections in HVAC systems, electronic enclosures, and automotive panels. The zinc plating provides a essential barrier against rust, making it a reliable, long-lasting fastener for both indoor and mildly corrosive environments.

Specification Summary & Compliance

This screw conforms to standard dimensional specifications for a No. 8-15 thread (0.164" diameter, 15 threads per inch) with a right-hand thread direction and a unified thread forming (Type A/AB) profile. The 1/4" length and pan head geometry are manufactured to standard industrial tolerances. This product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances for safe use in global markets.