Hertel K020041AS M2x0.40 Metric Coarse Straight Flute Tap

Product Description

The HERTEL K020041AS is a straight flute plug tap designed for cutting M2x0.40 metric coarse internal threads in a range of materials. Built from high-speed steel with a bright, uncoated finish, this tap delivers consistent thread quality in through-hole and blind-hole applications where chip evacuation is managed manually or with coolant applied externally. The plug chamfer — typically 3 to 5 threads of taper — makes it the standard choice for starting threads from scratch or completing a pre-tapped hole. Three flutes provide adequate chip clearance for the small M2 thread size. Overall length is 1.75 inches with a thread length of 0.4375 inches and a shank diameter of 0.141 inches.

This tap is suited for light machining, toolroom, and maintenance applications where M2x0.40 metric coarse threads are required. It is commonly used by machinists, tool and die makers, and maintenance technicians working on precision assemblies, instrument components, and small fastener applications. Right-hand thread direction means it is driven with standard clockwise rotation. The D1 thread limit designates a close tolerance class appropriate for general-purpose metric thread fits.

Key Features

• M2x0.40 metric coarse thread form for standard metric fastener compatibility
• Plug chamfer for versatile use in through-hole and blind-hole tapping
• High-speed steel construction for durability in ferrous and non-ferrous materials
• Bright, uncoated finish suitable for general-purpose threading operations
• D1 thread limit for close-tolerance metric thread fits
• Three-flute design optimized for chip clearance at small thread diameters

Compatibility

Designed as a standard OEM-style replacement or new-installation tap for M2x0.40 metric coarse thread applications in general machining and maintenance environments.

Installation Notes

This tap is installed by machinists or maintenance technicians using a tap wrench or tapping head rated for the applicable spindle speed. Always use a tapping fluid appropriate for the workpiece material to extend tool life and improve thread finish. Back the tap out periodically to break and clear chips, particularly in blind-hole applications. Ensure the starting hole diameter matches the recommended M2x0.40 drill size before tapping to avoid tap breakage.