Value Collection 00382283 Combination Drill Tap 1/2-20 Unf

Product Description

The VALUE COLLECTION 00382283 is a combination drill tap designed to drill and tap a hole in a single pass, eliminating the need for a separate twist drill operation. It is sized for 1/2-20 UNF threads with an H3 thread limit, making it suited for applications requiring fine-thread fastening in steel, aluminum, and similar materials. The cutting geometry is ground from high-speed steel (HSS) for durability across general-purpose threading tasks. The drill diameter measures 0.458 inches, with a thread length of 1-15/32 inches and an overall length (OAL) of 4-1/16 inches. Machinists, tool-and-die workers, and maintenance technicians install this tool in drill presses, mills, and hand-held power equipment.

This combination drill tap is used in production machining, repair shops, and field maintenance where through-hole or blind-hole 1/2-20 UNF threading is required. The H3 tolerance class produces threads within a standard fit range suitable for most general mechanical assemblies. It is appropriate for both light-production runs and one-off repair work where consolidating the drill-and-tap operation saves setup time and reduces tool changes.

Key Features

• Single-pass drill-and-tap operation reduces cycle time and tool changes
• 1/2-20 UNF thread form with H3 thread limit for standard fit assemblies
• 0.458-inch drill diameter matched to the 1/2-20 thread form
• 1-15/32-inch thread length provides adequate engagement depth for most applications
• 4-1/16-inch overall length compatible with standard drill chuck setups
• High-speed steel construction for general-purpose cutting performance

Compatibility

Designed as a standard combination drill tap for use in drill presses, milling machines, or hand-held power tools accepting straight-shank tooling in the appropriate collet or chuck size.

Installation Notes

Installation is performed by machinists or maintenance technicians using a drill press, milling machine, or appropriate power tool. Ensure the workpiece is securely fixtured and the spindle is properly aligned before starting the operation. Use appropriate cutting fluid for the workpiece material to extend tool life and improve thread quality. Inspect the tool for wear or chipping before each use, as a damaged cutting edge can produce out-of-tolerance threads or cause tool breakage.