Scientific Cutting Tools TT290500A Threading Tool Internal

Product Description

The SCIENTIFIC CUTTING TOOLS TT290500A is a solid carbide single point threading tool designed for internal thread cutting operations. It handles a minimum threading diameter of 0.29 inches and covers a range of 12 to 40 threads per inch (TPI), making it suitable for a wide spread of unified and metric-equivalent thread pitches in that range. The tool features a 60-degree profile angle and an AlTiN Plus coating that improves wear resistance and heat tolerance at the cutting edge. With a 0.5 inch cut depth and 0.07 inch projection from edge, it delivers precise thread geometry in bored or drilled internal features. Machinists and tool and die professionals install this tool in CNC lathes and turning centers.

This threading tool is suited for internal threading applications on CNC turning equipment in production and job shop environments. It accommodates a broad TPI range, reducing the number of tool changes needed when threading different pitches within the 12 to 40 TPI window. The 5/16 inch shank diameter fits standard boring bar holders and quick-change tooling systems commonly found on production lathes. It is appropriate for threading ferrous and non-ferrous workpiece materials where a solid carbide substrate and AlTiN Plus finish provide the required edge life and surface quality.

Key Features

• Solid carbide construction for rigidity and long tool life in interrupted and continuous threading cuts
• AlTiN Plus coating enhances heat and oxidation resistance, extending performance in dry or minimal-lubrication cutting
• 60-degree profile angle cuts standard unified and similar thread forms
• 12 to 40 TPI range covers a wide variety of internal thread pitches with a single tool
• 0.29 inch minimum threading diameter allows use in relatively small bored features
• No coolant-through design - suitable for external coolant delivery setups

Compatibility

Designed for use in CNC lathes and turning centers with toolholders accepting a 5/16 inch shank diameter for internal threading operations.

Installation Notes

Installation and tool changes must be performed by a qualified machinist with the spindle fully stopped and the machine in a safe, locked-out state. Verify that the toolholder bore matches the 5/16 inch shank diameter and that the tool is secured to the manufacturer-specified clamping method before resuming operation. Do not exceed the cutting depth rating of 0.5 inches. Confirm thread pitch and profile requirements against part drawing callouts before beginning a threading pass.