S-90096A427 8-32 x 3/8" ASME B18.6.3, SAE J933 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, ensuring long-term reliability in harsh industrial environments.
- High-strength fastening in multiple materials including aluminum, brass, cast iron, and sheet metal without requiring pre-tapped holes.
- Secure anti-loosening performance due to serrated locking under the flange, maintaining joint integrity under vibration.
- Efficient installation with external hex drive allowing high torque application and quick assembly using standard tools.
- Optimized thread engagement with coarse UNC threading and full threading design, providing strong pull-out resistance.
- Flanged design eliminates need for washers, distributing load evenly and reducing component count in assemblies.
- Precision compatibility with No. 26 drill bit (0.147" diameter), ensuring accurate hole sizing for reliable thread cutting.
Professional Applications & Engineering Value
These 8-32 UNC thread cutting screws are engineered to solve common industrial fastening challenges in aluminum, brass, cast iron, and sheet metal applications. The zinc-plated steel material offers excellent corrosion protection, while the external hex drive and serrated locking flange ensure vibration-resistant, high-torque installations. The coarse thread spacing and fully threaded design enable rapid, secure fastening in soft metals and alloys, reducing assembly time and eliminating the need for separate locking washers. Ideal for heavy-duty industrial equipment, automotive components, and metal fabrication, these screws deliver consistent performance where reliability is critical.
Specification Summary & Compliance
This No. 8 screw size features a 3/8" length with UNC coarse threads and Class 2A thread fit for standard industrial use. It complies with ASME B18.6.3 manufacturing specifications and is RoHS 3 (2015/863/EU) Compliant, meeting environmental and safety regulations. Designed for use with a No. 26 drill bit (0.147" diameter), it ensures precise hole preparation for optimal thread cutting performance in various metal substrates.
