Hertel K008055AS Plug Hand Tap 3-48 Unc 2-flute Hss

Product Description

The HERTEL K008055AS is a 3-48 UNC plug chamfer hand tap designed for cutting right-hand internal threads in metalworking and machining applications. Ground from high speed steel with a bright, uncoated finish, this 2-flute straight-flute tap runs 1-13/16 inches overall length with a 1/2-inch thread length. The plug chamfer — typically 3 to 5 threads of lead — suits both through-holes and blind holes where entry space is not severely limited. It is sized for the 3-48 thread class 2B fit, providing standard tolerances appropriate for general-purpose fastener engagement. Licensed machinists, tool-and-die makers, and maintenance technicians are the primary users.

This tap is used in precision threading operations on ferrous and non-ferrous workpieces where a 3-48 UNC thread is required. Common applications include instrument assembly, electronics hardware, small mechanical assemblies, and repair of stripped or damaged threads in compact components. The H2 thread limit holds the tap cutting geometry within established oversize tolerances for class 2B fits, making it suitable for production and job-shop work where consistent thread quality is required. It is intended for hand tapping or low-speed machine tapping setups.

Key Features

• 3-48 UNC thread form with plug chamfer for versatile through-hole and blind-hole threading
• High speed steel construction provides wear resistance across a broad range of workpiece materials
• Bright, uncoated finish — no coating to flake or affect dimensional integrity in precision work
• 2-flute straight-flute geometry for efficient chip evacuation in standard tapping operations
• H2 thread limit maintains class 2B fit tolerances for consistent, repeatable thread quality
• Right-hand thread direction, standard for the vast majority of fastener applications

Compatibility

Designed as a standard replacement or production tap for any application requiring a 3-48 UNC right-hand internal thread with a class 2B fit tolerance.

Installation Notes

Tapping should be performed by a qualified machinist or maintenance technician using an appropriate tap wrench or low-speed tapping attachment. Always use a compatible cutting fluid for the workpiece material to extend tool life and improve thread finish. Secure the workpiece firmly before starting, and back off the tap periodically to break and clear chips, especially in deeper blind holes. Never apply excessive torque to small-diameter taps — breakage risk increases significantly at this size.