Hertel K027735AS Spiral Point Tap M4.5x0.75 Metric Coarse

Product Description

The HERTEL K027735AS is a spiral point tap designed for cutting M4.5x0.75 metric coarse internal threads in through-hole applications. It features a plug chamfer and a 2-flute spiral point geometry that pushes chips forward ahead of the tap, keeping the flutes clear during the threading operation. Manufactured from high-speed steel, this tap is suited for general-purpose tapping in a range of ferrous and non-ferrous materials. The right-hand thread direction and D4 thread limit make it a standard production choice for machine tapping and hand tapping in precision assembly and fabrication environments. Licensed machinists, tool and die makers, and maintenance technicians are the primary users.

This tap is used in through-hole tapping operations where chip evacuation forward is practical. The M4.5x0.75 metric coarse thread form is common in light mechanical assemblies, fixture work, and machine component fabrication. The plug chamfer — typically 3 to 5 threads of lead — allows the tap to start easily in a drilled hole and is the standard choice for most general through-hole tapping work on drill presses, CNC machining centers, and tapping machines. It is not suited for blind-hole applications where chip packing is a concern.

Key Features

• Spiral point geometry pushes chips forward for clean through-hole tapping
• M4.5x0.75 metric coarse thread form for standard metric fastener applications
• Plug chamfer provides easy starting and stable lead in through-hole setups
• D4 thread limit for controlled thread tolerance in production environments
• High-speed steel construction for general-purpose tapping in a variety of workpiece materials
• Right-hand thread direction, compatible with standard tapping chucks and holders

Compatibility

Designed as a general-purpose spiral point tap for through-hole tapping operations requiring an M4.5x0.75 metric coarse thread form. Consult your machining setup and material requirements to confirm suitability before use.

Installation Notes

Tapping operations should be performed by qualified machinists following shop safety procedures. Ensure the workpiece is securely fixtured and the tap is properly aligned with the drilled hole before applying torque to avoid tap breakage. Use an appropriate cutting fluid for the workpiece material to extend tool life and improve thread quality. Always follow machine tool manufacturer guidelines and applicable shop standards when setting spindle speed and feed rate for the tap diameter and material being threaded.