Value Collection 00452441 Combination Drill Tap 1/2-13 H3

Product Description

The VALUE COLLECTION 00452441 is a combination drill tap designed to drill and tap a hole in a single operation, eliminating the need for a separate drill bit and tap. Built from high-speed steel (HSS), this tool handles the full sequence from drilling to thread forming in one pass. It produces 1/2-13 UNC threads to an H3 thread limit, with a drill diameter of 0.435 inches and a thread length of 1-15/32 inches. Overall length is 4-1/16 inches. Machinists, tool-and-die technicians, and maintenance mechanics use this tool in drill presses and CNC machines to cut clean internal threads in steel, aluminum, and similar materials.

This combination drill tap is suited for production and maintenance applications where threading 1/2-13 UNC holes in ferrous and non-ferrous materials is required. The two-flute design provides efficient chip evacuation in through-hole and shallow blind-hole applications. It is appropriate for use in machine shops, fabrication environments, and industrial maintenance settings where throughput and repeatability matter. The H3 thread limit is a standard tolerance class widely specified for general-purpose UNC fastener fits.

Key Features

• Drills and taps in a single pass, reducing cycle time and tool changes
• 1/2-13 UNC thread form to H3 tolerance for general-purpose fastener fits
• High-speed steel construction provides heat resistance and tool durability
• 0.435-inch drill diameter sized for 1/2-13 thread engagement
• Two-flute geometry supports chip clearance in through-hole applications
• 4-1/16-inch overall length compatible with standard chucks and collets

Compatibility

Designed as a general-purpose combination drill tap for use in drill presses, CNC machining centers, and tapping machines capable of accepting the tool shank and providing the appropriate feed rate for simultaneous drilling and threading operations.

Installation Notes

Installation is performed by qualified machinists or maintenance mechanics using a drill press, CNC machine, or tapping machine set to the correct spindle speed and feed rate for the workpiece material. Secure the workpiece firmly before beginning the operation and use cutting fluid appropriate for the base material to extend tool life and improve thread quality. Do not apply this tool as a hand tap — it requires machine operation to maintain the synchronized feed-per-revolution required for proper thread formation. Inspect the tool for wear or chip buildup between uses.