Carmex MT0500D1216UN Thread Mill 3/4-16 Internal Carbide

Product Description

The CARMEX MT0500D1216UN is a solid carbide helical flute thread mill designed for cutting internal 3/4-16 UNF threads in a single helical pass. With four right-hand flutes and a TiAlN coating, it handles demanding materials while maintaining edge life in production environments. The cutting diameter is 0.472 inches, the length of cut is 1.22 inches, and the overall length is 3.5 inches. Engineered to Material Grade MT7, this tool delivers consistent thread geometry on CNC machining centers where precision and repeatability are required.

This thread mill is suited for internal threading applications in job shops, production machining, and tool rooms working with ferrous and non-ferrous materials. The 1/2 inch shank diameter fits standard ER and shrink-fit toolholders commonly found on vertical and horizontal machining centers. The helical flute design allows interpolation on three axes, making it effective for through-holes and blind holes where tap breakage is a concern.

Key Features

• Cuts 3/4-16 UNF internal threads at 16 teeth per inch
• Solid carbide construction in Material Grade MT7 for rigidity and wear resistance
• TiAlN coating extends tool life in high-temperature cutting conditions
• Four right-hand helical flutes for efficient chip evacuation
• 0.472 inch cutting diameter with 1.22 inch length of cut for threading depth flexibility
• No coolant-through design - compatible with external coolant or mist applications

Compatibility

Designed for CNC machining centers capable of helical interpolation; accepts standard 1/2 inch shank toolholders. Threads produced conform to UNF standards for 3/4-16 internal applications.

Installation Notes

Installation and operation should be performed by a qualified machinist or CNC programmer familiar with thread milling cycles. Secure the tool in a balanced, properly torqued toolholder before spindle engagement. Program the correct helical interpolation cycle per the machine control to achieve the specified thread pitch and depth. Verify workpiece fixturing and runout before cutting to avoid thread form errors or tool breakage.