S-93882A223 12-24 x 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in demanding industrial environments.
• Enhanced load distribution and vibration resistance thanks to the integrated 0.432" flange, preventing loosening under stress.
• High-strength, permanent threads created by the thread-forming (SW) design, eliminating the need for a pre-tapped hole and providing excellent holding power in ductile materials.
• Versatile drive options with a combined external hex/slotted head, offering flexibility for use with various tools and ensuring a secure, high-torque installation.
• Optimized for rapid installation in steel, aluminum, brass, and cast iron using a standard No. 8 drill bit (0.199" diameter), streamlining assembly processes.
• Reliable coarse UNC threading ensures quick engagement and robust performance, reducing the risk of cross-threading during installation.
• Fully threaded blunt tip design provides maximum thread contact for a stronger, more secure fastening joint from start to finish.

Professional Applications & Engineering Value

This 12-24 UNC zinc-plated steel tapping screw is engineered to solve critical challenges in metal assembly. Its thread-forming SW technology displaces material to create strong, wear-resistant threads without generating chips, making it ideal for steel, aluminum, brass, and cast iron applications where debris contamination is a concern. The flanged hex head provides a larger bearing surface, distributing clamp load effectively to prevent sheet metal distortion and resist vibrational loosening in machinery and automotive components. The combination of a coarse UNC thread and external hex/slotted drive allows for high-speed installation with common tools, significantly reducing assembly time and labor costs in high-volume production environments.

Specification Summary & Compliance

This screw conforms to Unified Coarse (UNC) thread standards with a Class 2A tolerance for consistent fit. It is a right-hand, fully threaded, thread-forming (SW type) tapping screw designed for use with a No. 8 drill bit (0.199" diameter). The zinc-plated steel finish offers basic corrosion protection. Manufactured to industry-accepted specifications for dimensional accuracy and performance in metal fastening applications.