Hertel K008903AS Tap Set 2-56 Unc 3 Flute Hss

Product Description

The HERTEL K008903AS is a 3-piece tap set designed for cutting 2-56 UNC internal threads in metal workpieces. Manufactured from high speed steel with a bright finish, this set covers the full progression needed for hand or machine tapping operations. The overall length of 1.75 inches makes it well suited for compact fastener applications where small-diameter precision threading is required. The H2 thread limit and 3-flute geometry deliver consistent chip evacuation and dimensional accuracy in the 2B and 3B classes of fit. Machinists, tool-and-die makers, and maintenance technicians working with small UNC fasteners will find this set a reliable bench staple.

This tap set is intended for threading 2-56 UNC holes in ferrous and non-ferrous metals in both shop and field maintenance environments. The 2-56 thread size is commonly encountered in precision instruments, small electrical enclosures, and light-duty mechanical assemblies. The 3-piece configuration covers taper, plug, and bottoming tap styles, allowing the user to start, progress, and finish threads in through-holes or blind holes without switching to a separate tap set.

Key Features

• High speed steel construction for durability across ferrous and non-ferrous materials
• 3-flute design promotes efficient chip removal during tapping
• Bright finish reduces friction and aids chip flow in light-duty applications
• H2 thread limit ensures tight dimensional control within 2B and 3B class of fit tolerances
• 3-piece set provides taper, plug, and bottoming taps in one package
• Compact 1.75-inch overall length suits small-diameter fastener work

Compatibility

Designed as a standard replacement or stock tap set for 2-56 UNC threading applications in manual or low-speed machine tapping operations where H2 thread limit and 2B or 3B class of fit are specified.

Installation Notes

Tapping operations should be performed by a qualified machinist or maintenance technician familiar with proper speeds, feeds, and cutting fluid selection for the workpiece material. Always secure the workpiece firmly before tapping, and use an appropriate cutting fluid to extend tap life and improve thread quality. Back the tap out periodically to break chips and prevent tap breakage, particularly in blind-hole applications. Replace worn or damaged taps rather than forcing them to prevent workpiece damage.