Hertel K008059AS Straight Flute Tap 3-48 Unc Plug 2B Hss

Product Description

The HERTEL K008059AS is a straight flute plug tap designed for cutting internal threads in a 3-48 UNC thread form. Made from high-speed steel with a bright, uncoated finish, this tap is suited for general-purpose threading in softer materials where a standard tool life is acceptable. It features 3 flutes and a plug chamfer, which distributes the cutting load across several leading threads before reaching full depth. Overall length is 1.8125 inches. It carries a 2B class of fit and an H2 thread limit, making it appropriate for standard tolerance threading applications in production and maintenance environments.

This tap is used in machine shop, maintenance, and assembly applications where 3-48 UNC threaded holes are required. The plug chamfer makes it versatile for both through holes and blind holes with adequate depth. It is sized for use in tapping heads, CNC machining centers, drill presses, or by hand with a tap wrench. Machinists, tool and die makers, and maintenance technicians are the typical users. The right-hand thread direction is standard for conventional 3-48 UNC fastener systems.

Key Features

• 3-48 UNC thread form with right-hand thread direction
• Plug chamfer allows use in both through holes and sufficiently deep blind holes
• 3-flute straight flute geometry suitable for softer workpiece materials
• High-speed steel construction provides good wear resistance for general threading tasks
• Bright uncoated finish - no additional coating variables to account for in setup
• H2 thread limit and 2B class of fit for standard tolerance threaded connections

Compatibility

Designed as a standard straight flute plug tap for use in any tapping setup that accepts tooling sized for 3-48 UNC thread cutting.

Installation Notes

Installation of this tap should be performed by a machinist or qualified maintenance technician familiar with thread cutting practices. Ensure the workpiece is securely fixtured and the tap is properly aligned before engagement to avoid tap breakage. Use an appropriate cutting fluid for the workpiece material to extend tool life and improve thread quality. When using in a machine setup, verify spindle speed and feed rate are appropriate for the small diameter of a number 3 tap to reduce the risk of breakage.