Emuge CU519400.5016 Spiral Flute Tap 3/4-10 Unc Bottoming

Product Description

The EMUGE CU519400.5016 is a spiral flute tap designed for blind hole threading in a wide range of metallic materials. Built from cobalt high-speed steel and finished with a TiCN coating, it delivers the hardness and lubricity needed for demanding tapping applications. This tap cuts a 3/4-10 UNC right-hand thread to a 2B class of fit, with a 45-degree helix angle that efficiently evacuates chips up and out of blind holes. Overall length is 4.921 inches with a thread length of 0.984 inches. It is part of the EMUGE Enorm series and is installed by machinists and toolroom technicians in production and repair environments.

This tap is suited for blind hole threading in aluminum alloy, copper, copper alloy, stainless steel, and steel. The bottoming chamfer allows threads to be cut close to the bottom of a blind hole, making it useful in tight-tolerance fixturing, structural components, and precision machined assemblies. The fast flute style promotes rapid chip evacuation. Coolant-through capability is not included in this tap, so standard external coolant or cutting oil application is recommended during use.

Key Features

• 3/4-10 UNC thread form, 2B class of fit, right-hand thread direction
• Bottoming chamfer for threading to the bottom of blind holes
• 45-degree helix angle with fast flute style for efficient chip removal
• Cobalt construction with TiCN coating for extended tool life in tough materials
• 4 flutes for balanced cutting and chip load distribution
• Part of the EMUGE Enorm series, engineered for high-performance tapping

Compatibility

Rated for use in aluminum alloy, copper, copper alloy, stainless steel, and steel. Designed for blind hole threading applications where a bottoming chamfer is required.

Installation Notes

This tap is installed by machinists using a tap wrench, tapping head, or CNC toolholder appropriate for the shank diameter. Before tapping, ensure the drilled hole diameter matches the correct tap drill size for a 3/4-10 UNC thread to achieve the intended thread engagement. Apply cutting oil or appropriate metalworking fluid to the tap and workpiece during operation. Secure the workpiece firmly and verify spindle alignment to prevent tap breakage, particularly when threading close to the bottom of a blind hole.