S-93406A111 Length 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 316 stainless steel construction, ideal for harsh environments and outdoor applications.
• Superior holding power and vibration resistance through precision thread forming technology, creating strong, lasting threads in sheet metal.
• Enhanced load distribution and reduced material stress thanks to the wide truss head design, preventing pull-through and surface damage.
• Secure and reliable installation with the No. 1 Phillips drive, minimizing cam-out and ensuring efficient fastening.
• Full 1/2" threading provides maximum grip length for a stronger, more secure connection in sheet metal assemblies.
• Compliance with major environmental regulations including RoHS 3 and REACH, ensuring safety and suitability for global markets.
• Optimized for 0.025" maximum sheet thickness, making it a precise and effective solution for standard sheet metal fabrication.

Professional Applications & Engineering Value

This No. 4-24 thread forming screw is engineered to solve common fastening challenges in sheet metal applications. Its 316 stainless steel composition offers superior resistance to corrosion from chemicals, saltwater, and industrial atmospheres, significantly extending the service life of assemblies in demanding environments. The thread forming (Type A/AB) tapping method displaces material to create a zero-clearance fit, eliminating the need for a pre-tapped hole and providing exceptional resistance to loosening under vibration. The wide truss head distributes clamping force over a larger area, reducing the risk of crushing thin sheet metal and providing a more secure, flush finish. Combined with the No. 1 Phillips drive, this screw ensures quick, reliable installation in high-volume production settings, making it an indispensable sheet metal fastener for HVAC, electronics enclosures, and automotive panels.

Specification Summary & Compliance

This tapping screw conforms to Unified (inch) standards with a No. 4-24 thread (0.112" diameter, 24 TPI) and a right-hand direction. It is fully threaded to a length of 1/2" with a pointed tip for easy starting. The screw is manufactured to precise dimensional tolerances for consistent performance. This product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free of hazardous substances and meets stringent environmental and safety standards for industrial use.