Value Collection 00382242 Combo Drill Tap 5/16-24 H3 Hss

Product Description

The VALUE COLLECTION 00382242 is a combination drill tap designed to drill and tap a threaded hole in a single operation. Made from high-speed steel, this tool handles both the drilling and threading steps without requiring a separate drill bit and tap. It produces a 5/16-24 UNF thread with an H3 thread limit, making it suited for precision threading applications where consistent fit and tolerance are required. The 0.277-inch drill diameter clears material ahead of the cutting flutes, while the 7/8-inch thread length completes the full thread form. Licensed machinists, maintenance technicians, and production operators are the typical users.

This combination drill tap is used in metal fabrication, general machining, and maintenance repair operations where UNF fine-thread fastener holes are needed. The 5/16-24 thread size is common in automotive, mechanical assembly, and industrial equipment applications. At 2-27/32 inches overall length, it fits standard drill press chucks and hand-held power tools with appropriate drill tap attachments. It is best applied in through-hole or shallow blind-hole scenarios in mild steel, aluminum, and similar machinable materials.

Key Features

• Drills and taps in a single pass, reducing setup time and tool changes
• 5/16-24 UNF thread form for fine-thread fastener applications
• H3 thread limit for consistent fit with standard UNF tolerances
• High-speed steel construction provides hardness and heat resistance during cutting
• 0.277-inch drill diameter sized to produce correct thread engagement
• 7/8-inch thread length suitable for typical fastener engagement depths

Compatibility

Designed as a standard combination drill tap for use in materials compatible with high-speed steel tooling where a 5/16-24 UNF threaded hole is required.

Installation Notes

This tool is installed and operated by machinists or qualified maintenance technicians using a drill press, CNC machine, or appropriate hand-held power tool with a suitable chuck. Use cutting fluid to reduce heat buildup and extend tool life, especially in ferrous metals. Secure the workpiece firmly before operation to prevent movement during drilling and tapping. Inspect the tool for chipping or wear before each use, as a damaged cutting edge can result in broken taps or out-of-tolerance threads.