S-90033A310 Length 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide steel construction, extending service life in demanding industrial environments
• Efficient thread-forming design creates strong, permanent threads in sheet metal without pre-tapping, reducing installation time
• Precise flush mounting with 82° undercut flat head profile that sits perfectly countersunk in sheet metal applications
• Optimized for 0.025" sheet metal with No. 21 drill bit compatibility for precise, secure fastening in thin materials
• Enhanced driving control with Phillips No. 2 drive that minimizes cam-out during installation
• Full-length threading provides maximum grip and holding power along the entire screw length
• Compliant with industry regulations including RoHS 3 and REACH for safe, environmentally responsible manufacturing

Professional Applications & Engineering Value

This black-oxide steel tapping screw delivers exceptional performance in sheet metal fabrication and assembly operations. The thread-forming A/AB tapping screw design eliminates the need for separate tapping operations, significantly reducing labor costs and assembly time while creating stronger, more reliable threads that resist vibration loosening. The 82° undercut flat head profile ensures a clean, flush finish that meets aesthetic requirements while preventing snagging. With fully threaded construction and right-hand threading, these screws provide maximum pull-out resistance in thin-gauge materials up to 0.025" thickness, making them ideal for HVAC systems, electronic enclosures, automotive components, and industrial equipment where corrosion resistance and reliable fastening are critical.

Specification Summary & Compliance

This No. 10-12 x 1/2" tapping screw features precision thread forming technology with 12 threads per inch and meets standard dimensional requirements for A/AB tapping screw applications. Manufactured to exacting specifications with Class 2A thread tolerances, the screw ensures consistent performance and compatibility with standard No. 21 drill bits (0.159" diameter). The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its environmental safety and suitability for global industrial markets.