S-91715A142 10-32 x 3/8" ASME B18.6.3, SAE J933 Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black zinc-plated steel coating, extending service life in harsh industrial environments.
• Excellent thread-cutting performance for Type F tapping screws, enabling secure fastening in aluminum, brass, cast iron, and sheet metal without pre-tapping.
• Reliable fine thread engagement with 10-32 UNF threads, providing enhanced vibration resistance and superior holding power in metal assemblies.
• Efficient installation using a standard Phillips No. 2 drive, reducing tool slippage and speeding up assembly processes.
• Optimized compatibility with No. 17 drill bits (0.173" diameter), ensuring precise hole preparation for consistent thread formation.
• Full threading along the 3/8" length allows maximum grip across the entire fastener, improving load distribution in thin materials.
• Compliance with ASME B18.6.3 and RoHS 3 standards guarantees consistent quality, safety, and environmental responsibility for industrial use.

Professional Applications & Engineering Value

These 10-32 UNF fine thread tapping screws are engineered to address common challenges in metalworking and assembly, such as stripping, corrosion, and inconsistent thread engagement. Made from black zinc-plated steel, they provide a durable barrier against moisture and chemicals, ideal for outdoor equipment, automotive components, and electrical enclosures. The thread-cutting design (Type F) eliminates the need for separate tapping operations in materials like aluminum, brass, and cast iron, reducing labor time and tooling costs. With a Phillips drive and blunt tip, they ensure straightforward installation in sheet metal and other thin substrates, minimizing the risk of material deformation. These screws are widely used in HVAC systems, machinery frames, and metal fabrication projects where vibration resistance and long-term reliability are critical.

Specification Summary & Compliance

This product adheres to Class 2A thread tolerances under the UNF (Unified National Fine) standard, ensuring precise fit and interchangeability. It meets ASME B18.6.3 specifications (referencing SAE J933) for dimensional accuracy and performance in thread-cutting applications. The screws are fully compliant with RoHS 3 (2015/863/EU) regulations, confirming the absence of hazardous substances. Key dimensions include a No. 10 screw size, 3/8" length, 0.19" thread diameter, and pan head style with 0.373" head diameter for reliable clamping force.