S-90415A443 Length 1 1/4" Tapping Screws

Key Features & Benefits at a Glance

• Corrosion-resistant 18-8 stainless steel construction ensures long-term durability in harsh environments, reducing replacement costs and maintenance downtime.
• Self-drilling tip with 0.126" maximum drilling capacity eliminates the need for pre-drilling, speeding up installation in steel, stainless steel, and sheet metal.
• Thread-forming BSD design creates strong, secure threads for superior vibration resistance and holding power in thin materials.
• Phillips pan head with No. 2 drive provides reliable torque transfer and a low-profile finish for smooth, flush installations.
• Fully threaded 1-1/4" length offers maximum engagement and pull-out strength across the entire fastener length.
• Consistent 18 threads per inch ensures precise, repeatable fastening performance for quality assembly line operations.
• Right-hand threading allows for standard installation tools and processes, improving workflow efficiency.

Professional Applications & Engineering Value

These No. 8 x 1-1/4" tapping screws are engineered to solve critical challenges in metal fabrication and assembly. The corrosion-resistant 18-8 stainless steel material prevents rust and degradation, making them ideal for outdoor equipment, HVAC systems, and marine applications. The integrated drill tip and thread-forming BSD design eliminate separate drilling and tapping steps, reducing labor time and tooling costs while minimizing material stress. This combination delivers reliable performance in steel, stainless steel, and sheet metal assemblies, ensuring vibration-resistant connections that maintain integrity under dynamic loads. The Phillips pan head offers secure driving with common tools, streamlining production in high-volume manufacturing environments.

Specification Summary & Compliance

These screws feature a 0.164" thread diameter with 18 threads per inch and comply with standard inch measurement tolerances. The BSD tapping screw type follows established thread-forming specifications for consistent performance. Manufactured from 18-8 stainless steel with corrosion-resistant coating, they meet industry requirements for material quality and are compliant with RoHS and REACH environmental standards for safe use in various industrial applications.