S-93878A126 8-32 x 1/4" Tapping Screws
Tapping Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding environments
- Excellent thread-forming capability creates permanent, vibration-resistant threads in steel, aluminum, brass, cast iron and sheet metal
- Reliable holding power through UNC coarse threading design that resists loosening under stress
- Universal compatibility with standard #23 drill bit (0.154") for simplified installation and reduced tooling requirements
- Full-length threading ensures maximum engagement and consistent clamping force across the entire fastener length
- Traditional slotted drive provides broad tool compatibility for maintenance and assembly applications
- Pan head design offers a balanced profile with good bearing surface for secure fastening
Professional Applications & Engineering Value
This 8-32 zinc-plated steel tapping screw delivers exceptional performance in metal fabrication and assembly operations. The thread forming design (SW type) displaces material rather than removing it, creating stronger, more durable threads that won't strip under vibration or load cycles. The UNC coarse thread pattern provides rapid installation and superior pull-out resistance in various base materials including steel, aluminum, brass, cast iron, and sheet metal. The zinc-plated finish offers reliable corrosion protection for indoor and protected outdoor applications, while the slotted pan head accommodates standard tools for maintenance-friendly disassembly when required. These characteristics make it ideal for metalworking, construction, and industrial equipment where vibration resistance and long-term reliability are critical.
Specification Summary & Compliance
This No. 8 screw features UNC coarse threads (8-32) with standard Class 2A tolerances for consistent performance. The fully threaded 1/4" length and blunt tip facilitate proper alignment and installation. Manufactured to industry standards for thread forming tapping screws with compatibility for #23 drill bit (0.154" diameter) preparation. The zinc-plated steel construction complies with RoHS and REACH environmental standards for industrial use.
