Cleveland C54818 Hand Tap 11/16-16 Unf Plug Hss

Product Description

The CLEVELAND C54818 is a straight-flute hand tap designed for cutting 11/16-16 UNF internal threads in both blind holes and through-holes. Built from high speed steel with a bright uncoated finish, this plug-chamfer tap suits general-purpose threading operations in machine shops, maintenance environments, and fabrication settings. With 4 flutes, a right-hand thread direction, and an H3 thread limit, it delivers consistent 2B class-of-fit threads across a range of workpiece materials. The overall length is 4.031 inches with a thread length of 1.09 inches, making it compatible with standard tap wrenches and machine holders sized for its 0.542-inch shank diameter.

This tap is suited for manual and low-speed machine tapping applications where a plug chamfer is appropriate for starting threads partway into a hole or threading completely through stock. It is rated for use in alloy steel, aluminum, carbon steel, and free-machining stainless steel. Machinists, toolroom technicians, and maintenance professionals regularly use this tap for repair threading, prototype work, and production runs requiring UNF 11/16-16 thread forms. It is part of Cleveland Series 1002.

Key Features

• 11/16-16 UNF right-hand thread form with H3 thread limit for 2B class-of-fit tolerance
• Plug chamfer allows threading to start easily in blind holes or through-holes
• 4-flute straight-flute geometry for chip clearance in a variety of machinable materials
• High speed steel construction provides durability across steel, aluminum, and free-machining stainless applications
• Bright uncoated finish suitable for use with standard cutting fluids and tapping compounds
• 0.625-inch square drive length for positive engagement with standard tap wrenches

Compatibility

Designed for use in applications requiring 11/16-16 UNF internal threads. Rated for threading alloy steel, aluminum, carbon steel, and free-machining stainless steel in both blind hole and through-hole configurations.

Installation Notes

This tap is installed by a machinist or toolroom technician using a tap wrench or machine tapping attachment. Always secure the workpiece and ensure the tap is started perpendicular to the surface to avoid tap breakage or thread misalignment. Apply a suitable cutting fluid or tapping compound for the workpiece material before and during tapping. Never force a tap that has become difficult to turn — back off to clear chips and re-apply fluid as needed.