S-91644A323 Length 3" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction for long-lasting performance in harsh industrial environments
• Enhanced driving efficiency through 3/8" external hex head design providing secure tool engagement and reduced installation time
• Integrated sealing and load distribution with stainless steel/rubber flat washer that prevents loosening and protects material surfaces
• Optimized thread forming capability with A/AB tapping screw design that creates strong, permanent threads in sheet metal without pre-tapping
• Maximum material penetration through fully threaded 3" length and pointed tip design for secure fastening in 0.025" maximum thickness materials
• Precision fit and reduced installation errors with 10 threads per inch and compatibility with standard 5.5mm (0.2165") drill bits
• Reliable performance in demanding applications with right-hand threading and round shank cross-section ensuring consistent torque transmission

Professional Applications & Engineering Value

These No. 14 thread forming tapping screws deliver exceptional engineering value for sheet metal applications where vibration resistance and material integrity are critical. The 18-8 stainless steel composition provides excellent corrosion resistance, making these hex head tapping screws ideal for outdoor equipment, HVAC systems, and industrial machinery exposed to moisture and chemicals. The thread forming design eliminates the need for separate tapping operations, reducing assembly time and costs while creating stronger, more reliable threads that won't strip under stress. The integrated flat washer with stainless steel/rubber construction serves dual purposes: distributing clamp load to prevent material deformation while providing a weather-resistant seal. With 3" fully threaded length and external hex drive, these fasteners ensure maximum engagement depth and straightforward installation using standard industrial tools, making them a cost-effective solution for high-volume manufacturing and maintenance operations.

Specification Summary & Compliance

These tapping screws feature precision Class 2A thread tolerances with 0.242" thread diameter and 10 threads per inch following standard industrial specifications. The A/AB tapping screw type complies with established thread forming standards for metal fastening applications. Manufacturing follows industry standards for 18-8 stainless steel fasteners, with materials meeting relevant industry specifications for corrosion resistance and mechanical properties. The product conforms to RoHS and REACH compliance requirements for industrial components, ensuring environmental responsibility while maintaining the high performance expected in professional sheet metal fastening applications.