S-90033A110 Length 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with Black-Oxide Steel coating, extending service life in demanding industrial environments
• Efficient thread forming design creates strong, permanent threads in sheet metal without pre-tapping requirements
• Precision 82° countersink angle ensures flush mounting and clean finished appearance in sheet metal assemblies
• Full threading along the entire length provides maximum grip and uniform stress distribution
• Optimized for 0.025" maximum drilling thickness in sheet metal applications, preventing material deformation
• Phillips drive with No. 1 size offers secure tool engagement and reduces cam-out during installation
• Right-hand threading with 24 TPI delivers reliable fastening performance in standard industrial applications

Professional Applications & Engineering Value

These No. 4-24 thread forming screws are specifically engineered to address common challenges in sheet metal assembly operations. The Black-Oxide Steel construction provides essential corrosion protection while maintaining the structural integrity required for industrial environments. The thread forming design eliminates the need for separate tapping operations, significantly reducing assembly time and labor costs. The fully threaded configuration ensures maximum engagement with the material, distributing stress evenly to prevent loosening under vibration. With their 82° countersink angle and flat head profile, these screws sit flush with the surface, creating smooth finishes in HVAC systems, electronic enclosures, and automotive components where aesthetics and safety are paramount.

Specification Summary & Compliance

These precision tapping screws feature a 0.112" thread diameter with 24 threads per inch and comply with standard inch measurement specifications. The manufacturing process ensures consistent dimensional accuracy for reliable performance in sheet metal applications. The product fully complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making them suitable for use in regulated industries and international markets. The No. 4 screw size with 1/2" length provides optimal fastening capability for materials up to 0.025" thickness when used with the recommended No. 44 drill bit (0.086" diameter).