Cleveland C57193 Spiral Point Tap 7/16-14 Unc Hss

Product Description

The CLEVELAND C57193 is a spiral point tap designed for through-hole threading in metalworking applications. It cuts a 7/16-14 UNC right-hand thread using a 3-flute, plug chamfer geometry that pushes chips forward ahead of the cutting action, keeping the flutes clear during blind-to-through passages. Manufactured from high speed steel (HSS) with a bright finish, this tap carries an H5 thread limit and a Class 2B/3B fit tolerance, making it appropriate for standard fastener-clearance threads in production and maintenance environments. Overall length is 3.156 inches with a thread length of 0.880 inches.

This tap is suited for through-hole threading operations in alloy steel, carbon steel, and aluminum workpieces. The plug chamfer distributes cutting load across several leading threads, making it a practical choice for CNC tapping centers, drill presses, and hand-tapping setups where through-hole access is available. Machinists, tool-and-die technicians, and maintenance mechanics will find this tap appropriate for both production runs and repair work requiring a standard 7/16-14 UNC thread profile.

Key Features

• Spiral point geometry pushes chips forward for cleaner through-hole threading
• 3-flute plug chamfer distributes cutting load for longer tool life
• High speed steel construction handles alloy steel, carbon steel, and aluminum
• H5 thread limit with Class 2B and 3B fit tolerance for standard fastener threads
• Bright finish with no coolant-through requirement, compatible with cutting fluid flood application
• Right-hand thread direction, Series 1011

Compatibility

Designed for through-hole threading of 7/16-14 UNC threads in alloy steel, aluminum, and carbon steel workpieces. Fits standard tap holders and quick-change tapping chucks that accept a 0.323-inch shank diameter.

Installation Notes

This tap is installed by a machinist or maintenance mechanic using a standard tap wrench, tapping head, or CNC rigid-tapping spindle. Ensure the workpiece is securely fixtured and the pilot hole is drilled to the correct tap drill size for a 7/16-14 UNC thread before beginning. Apply an appropriate cutting fluid for the workpiece material to reduce heat and extend tap life. Do not force the tap if resistance increases unexpectedly — back off to clear chips and re-apply cutting fluid.