Irwin IR24614 Tap and Die Set Unc Unf Npt 11 Taps

Product Description

The IRWIN IR24614 is a non-metric tap and die set covering thread sizes from 1/4 inch to 1/2 inch across UNC, UNF, and NPT thread standards. The set includes 11 taps and 11 dies, all manufactured from high-carbon steel (HCS) for durability in threading steel, iron, and other common trade materials. Taps are plug-style for general-purpose through-hole and blind-hole threading. Dies are hexagon-shaped for secure grip in a die stock. The set ships with one plain die stock and one offset adjustable tap wrench, making it a self-contained threading kit for field and shop use.

This set is suited for plumbers, pipefitters, electricians, HVAC technicians, and general maintenance trades who need to chase, cut, or restore threads on fasteners, pipe fittings, and hardware. The inclusion of 1/8 inch-27 TPI NPT threading capability makes it particularly useful for plumbing and gas-line work where tapered pipe threads are standard. The range from 1/4 inch through 1/2 inch covers the most common fastener and pipe thread sizes encountered in residential and light commercial service work.

Key Features

• 11 HCS plug-style taps spanning UNC, UNF, and NPT thread forms
• 11 HCS hexagon dies in matching UNC, UNF, and NPT sizes
• Includes one plain die stock and one offset adjustable tap wrench
• NPT die at 1/8 inch-27 TPI for tapered pipe thread cutting and chasing
• Thread range 1/4 inch to 1/2 inch covers the most common field fastener sizes
• High-carbon steel construction for resistance to wear during repeated use

Compatibility

Designed for cutting and chasing standard UNC, UNF, and NPT threads in the 1/4 inch to 1/2 inch size range, compatible with common threaded fasteners and fittings used in plumbing, HVAC, electrical, and general mechanical applications.

Installation Notes

Always de-energize and de-pressurize any system before cutting or chasing threads on installed components. Use cutting fluid when threading ferrous metals to extend tap and die life and reduce the risk of breakage. Plug-style taps require a clear or partially formed hole before use and are not intended for starting threads from the face of solid stock without a drill press or center-punched pilot. Follow applicable codes such as IFGC or IPC when cutting NPT threads on gas or water piping.

Technical Specifications

• Thread Standards: UNC, UNF, NPT
• Thread Size Range: 1/4 inch to 1/2 inch
• Number of Taps: 11
• Number of Dies: 11
• Tap Style: Plug
• Die Shape: Hexagon
• Tap Material: High-Carbon Steel (HCS)
• Die Material: High-Carbon Steel (HCS)
• Included Tap Sizes: 1/4 inch-20 TPI UNC, 1/4 inch-28 TPI UNF, 5/16 inch-18 TPI UNC, 5/16 inch-24 TPI UNF, 3/8 inch-16 TPI UNC, 3/8 inch-24 TPI UNF, 7/16 inch-14 TPI UNC, 7/16 inch-20 TPI UNF, 1/2 inch-13 TPI UNC, 1/2 inch-20 TPI UNF, 1/8 inch-27 TPI NPT
• Includes: 11 taps, 1 plain die stock, 1 offset adjustable tap wrench
• UPC: 042526246142

Standard Information

• Brand: IRWIN
• Manufacturer Part Number: IR24614