Hertel K020042AS M2x0.40 Metric Coarse Bottoming Tap Hss

Product Description

The HERTEL K020042AS is a straight flute bottoming tap designed for cutting M2x0.40 metric coarse internal threads in through-holes and blind holes where threads must extend close to the bottom. Manufactured from high-speed steel with a bright, uncoated finish, this tap delivers reliable performance in a variety of ferrous and non-ferrous materials. With 3 straight flutes and a D1 thread limit, it produces accurate, consistent threads in low-to-moderate production environments. The overall length is 1.75 inches, the thread length is 0.4375 inches, and the shank diameter measures 0.1410 inches. It is installed by machinists, toolmakers, and maintenance technicians working on precision parts and equipment.

This tap is suited for use in manual tapping operations with a tap wrench, as well as in light-duty machine tapping setups. The bottoming chamfer allows thread cutting to the bottom of a blind hole, making it particularly useful when clearance is limited. Typical applications include tapping small threaded holes in fixtures, assemblies, and components where M2 metric coarse thread specifications are required. Right-hand thread direction is standard for the majority of conventional threading operations.

Key Features

• Bottoming chamfer allows threading to the bottom of blind holes with minimal clearance
• High-speed steel construction provides durability across a broad range of workpiece materials
• Bright, uncoated finish suited for general-purpose tapping applications
• 3 straight flutes for clean chip formation in short-chipping materials
• D1 thread limit for close tolerance, accurate thread production
• Right-hand thread direction compatible with standard tapping equipment

Compatibility

Designed as an OEM-style replacement or standard tooling option for applications requiring M2x0.40 metric coarse bottoming taps in manual or light-duty machine tapping setups.

Installation Notes

This tap should be installed by a qualified machinist or maintenance technician using a properly sized tap wrench or tapping head. Ensure the workpiece is securely fixtured before beginning the threading operation. Apply appropriate cutting fluid for the workpiece material to extend tap life and improve thread quality. Avoid excessive force, particularly at the bottom of blind holes, to prevent tap breakage.