S-91675A321 Length 3/8" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 410 stainless steel construction for long-lasting performance in demanding industrial environments
• Efficient thread forming technology creates strong, permanent threads in sheet metal without requiring pre-tapped holes
• External hex drive design provides excellent torque transmission and prevents tool slippage during installation
• Integrated flange feature distributes clamping pressure evenly and eliminates the need for separate washers
• Fully threaded pointed tip ensures quick starting and smooth penetration through sheet metal up to 0.025" thickness
• Precision No. 8-15 thread configuration delivers optimal grip strength and vibration resistance in sheet metal assemblies
• Environmental compliance assurance with RoHS 3 and REACH regulations for safe, sustainable manufacturing

Professional Applications & Engineering Value

These 410 stainless steel hex head tapping screws are engineered specifically for sheet metal applications where corrosion resistance and structural integrity are paramount. The thread forming design eliminates the need for separate tapping operations by cold-forming mating threads directly into the base material, creating stronger connections than conventional cutting screws. The external hex drive configuration allows for high-torque installation with standard tools, while the flanged design provides superior bearing surface distribution. The fully threaded pointed tip ensures rapid penetration and secure fastening in metal fabrication, HVAC systems, electrical enclosures, and industrial equipment assemblies where vibration resistance and long-term reliability are critical.

Specification Summary & Compliance

This No. 8-15 x 3/8" tapping screw features precision right-hand threads with 15 threads per inch and standard inch measurements. The screw is designed for use with No. 29 drill bits (0.136" diameter) and accommodates maximum drilling thickness of 0.025". Manufactured to industry standards for thread forming screws (Type A/AB), this fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial applications.