Titan Usa TT90563 Straight Flute Tap 5/8-11 Unc Bottoming Hss

Product Description

The TITAN USA TT90563 is a straight flute bottoming tap designed to cut 5/8-11 UNC right-hand internal threads in through-holes and blind holes where full thread depth close to the bottom is required. Built from high-speed steel with a bright uncoated finish, it runs 4 flutes and carries an H3 thread limit for controlled fit. The 2B/3B class of fit makes it suitable for standard fastener applications across general machining, maintenance, and repair work. Machinists, tool-and-die workers, and maintenance technicians are the primary users of this tap.

This tap is appropriate for threading ferrous and non-ferrous materials in manual hand-tapping or low-speed machine tapping operations. The bottoming chamfer — typically 1 to 2 threads of lead — allows threading to within a short distance of the bottom of a blind hole. It fits production and job-shop environments where 5/8-11 UNC threaded holes are common in structural, mechanical, or maintenance applications. The straight flute design is best suited for through-holes or short blind holes in materials that produce broken chips.

Key Features

• Bottoming chamfer for threading close to the bottom of blind holes
• 4 straight flutes for chip clearance in through-holes and short blind holes
• High-speed steel construction for durability in general-purpose tapping
• H3 thread limit for consistent 2B/3B class of fit
• Bright uncoated finish suitable for use with standard cutting fluids
• Right-hand thread direction, Series 725

Compatibility

Designed for standard hand-tap holders and machine tap adapters accepting a 0.48-inch shank diameter for 5/8-11 UNC threading applications.

Installation Notes

A licensed machinist or qualified maintenance technician should secure the workpiece before tapping to prevent movement. Use an appropriate cutting fluid for the material being tapped to extend tap life and improve thread finish. Align the tap squarely with the hole at the start to avoid tap breakage or crooked threads. When tapping blind holes, monitor depth carefully to avoid bottoming the tap against the hole floor under load.