Emuge CU20C310.5013 Spiral Point Tap 1/2-13 Unc Hss-e

Product Description

The EMUGE CU20C310.5013 is a spiral point tap designed for through-hole threading in a 1/2-13 UNC configuration. It is manufactured from High-Speed Steel-E (HSS-E) and carries a GLT-1 coating for extended tool life in demanding applications. The tap features a 3-flute, plug chamfer geometry with a right-hand thread direction and is ground to a 3B class of fit at H4 thread limit. With an overall length of 4.331 inches and a thread length of 25 millimeters, this tap suits production and job-shop environments where accurate, repeatable internal threads are required. Machinists and tool-room professionals are the primary installers.

This tap is suited for through-hole threading operations across a range of workpiece materials including steel, stainless steel, cast iron, and non-ferrous metals. The spiral point design pushes chips forward ahead of the tap, making it most effective in through-hole applications where chip evacuation along the flutes is not required. It is appropriate for use in CNC machining centers, drill presses, and manual tapping operations where consistent 1/2-13 UNC thread quality is the objective.

Key Features

• 1/2-13 UNC thread form ground to 3B class of fit at H4 thread limit for precise tolerance control
• HSS-E construction provides improved toughness and heat resistance over standard HSS
• GLT-1 coating reduces friction and wear, extending tool life in steel and stainless steel
• Spiral point geometry pushes chips forward, optimized for through-hole applications
• Plug chamfer allows easy starting and smooth thread engagement
• Right-hand thread direction compatible with standard tapping equipment and toolholders

Compatibility

Designed for through-hole threading in steel, stainless steel, cast iron, and non-ferrous metals. Compatible with standard 1/2-13 UNC tapping applications requiring a 3B class of fit. Fits tap holders sized for a 9.32 mm shank diameter with a 6.99 mm square drive.

Installation Notes

Installation is performed by machinists or toolroom professionals using a tapping head, CNC spindle, or manual tap wrench. Ensure the workpiece is securely fixtured and the tap is properly aligned with the pilot hole before engagement to avoid tap breakage or thread distortion. Apply appropriate cutting fluid for the workpiece material, particularly when tapping stainless steel or hardened steels. Coolant-through is not supported on this tap.