Cleveland C54838 Hand Tap 3/4-10 Unc Taper Rh H3 Hss

Product Description

The CLEVELAND C54838 is a 3/4-10 UNC straight flute hand tap designed for cutting internal threads in a variety of ferrous and non-ferrous materials. Built from high speed steel with a bright, uncoated finish, it features a taper chamfer for guided thread entry and four flutes for efficient chip clearance. The tap carries an H3 thread limit and a Class 2B fit, making it suitable for standard tolerance threaded holes. At 4.25 inches overall length with a 1.22-inch thread length, this tap is sized for both blind hole and through-hole threading operations on the shop floor or in the field.

This tap is used in machining, maintenance, and repair applications where 3/4-10 UNC internal threads are required. The taper chamfer style makes it particularly well suited for starting threads in through-holes and for use in hand-tapping setups with a tap wrench. It is commonly deployed in fabrication shops, millwright work, and field repair contexts involving structural or mechanical assemblies.

Key Features

• 3/4-10 UNC thread form with right-hand direction and taper chamfer for controlled thread entry
• H3 thread limit, Class 2B fit for standard tolerance internal threads
• High speed steel construction for durability across a range of workpiece materials
• Bright, uncoated finish — no coating buildup to affect thread tolerance
• 4-flute straight flute geometry supports blind hole and through-hole applications
• No coolant-through requirement — compatible with standard hand-tapping and machine-tapping setups

Compatibility

Rated for use in alloy steel, aluminum, carbon steel, and free-machining stainless steel. Suitable for blind hole threading and through-hole threading applications per supplier specifications.

Installation Notes

This tap is installed by a machinist or maintenance technician using a tap wrench or tapping fixture. Always secure the workpiece and ensure the pilot hole is drilled to the correct tap drill size for 3/4-10 UNC before threading. Apply appropriate cutting fluid for the workpiece material to reduce friction and extend tap life. Do not force the tap — back off periodically to break chips, especially in blind hole applications.