S-94077A411 1/2"-13 x 3" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with ultra-corrosion-resistant coating for extended service life in harsh industrial environments
• Enhanced driving efficiency with external hex head design providing secure tool engagement and high torque capability
• Excellent material displacement through thread forming (Type C) design creates stronger, more secure threads in steel and sheet metal
• Increased load distribution with integrated 1.04" flange that prevents pull-through and provides superior holding power
• Optimized thread engagement with 2½" minimum thread length ensuring reliable fastening in various material thicknesses
• Improved anti-rotation performance from five-lobe shank cross-section that resists loosening under vibration and dynamic loads
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for environmentally responsible manufacturing

Professional Applications & Engineering Value

These 1/2"-13 UNC flanged hex head tapping screws are engineered specifically for demanding steel and sheet metal applications where vibration resistance and long-term reliability are critical. The thread forming design eliminates the need for pre-tapped holes while creating stronger, more durable threads through material displacement rather than removal. The five-lobe shank cross-section provides exceptional resistance to rotational forces, making these Type C tapping screws ideal for structural assemblies, machinery frames, and industrial equipment subject to dynamic loading. The combination of ultra-corrosion-resistant coated steel construction and coarse UNC threads ensures reliable performance in challenging environments while the integrated flange distributes clamping force over a wider area, preventing material deformation in thinner gauge metals.

Specification Summary & Compliance

These industrial fasteners feature 1/2"-13 UNC coarse threads with standard Class 2A thread tolerances for consistent performance. The thread forming (Type C) design requires a 29/64" (0.4531") drill bit for proper installation in steel and sheet metal applications. Manufacturing and material composition comply with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and workplace safety standards. The partially threaded configuration with minimum 2½" thread length provides optimal engagement while the external hex drive and flange design meet industrial fastening requirements for high-torque applications.