Cleveland C54726 Hand Tap 1/2-13 Unc Taper 4-flute Hss

Product Description

The CLEVELAND C54726 is a 1/2-13 UNC straight-flute hand tap designed for cutting right-hand internal threads in a range of ferrous and non-ferrous materials. Built from high speed steel with a bright uncoated finish, it runs four flutes with a taper chamfer that guides the tap smoothly into the workpiece and distributes cutting forces across multiple teeth. Overall length is 3.375 inches with a thread length of 0.94 inches. The H3 thread limit holds a Class 3B fit, making it a dependable choice for precision threading applications in production and maintenance machining environments. Machinists and tool-and-die tradespeople are the primary installers.

The C54726 handles both blind-hole and through-hole threading operations. The taper chamfer, typically 8 to 10 threads of relief, makes it well suited as a starting tap for initiating threads from scratch rather than chasing or finishing existing threads. Recommended material applications include alloy steel, carbon steel, aluminum, and free-machining stainless steel. The shank diameter is 0.367 inches, and the square drive measures 0.275 inches across, compatible with standard tap wrenches and tapping attachments sized for the 1/2-13 range.

Key Features

• 1/2-13 UNC thread form, Class 3B fit with H3 thread limit for controlled tolerance
• Taper chamfer geometry for thread initiation in blind or through holes
• Four-flute straight-flute design suited for short-chipping materials
• High speed steel construction for durability across steel and aluminum applications
• Bright uncoated finish — no coating buildup to affect thread tolerance
• Right-hand thread direction, no coolant-through requirement

Compatibility

Designed for use in alloy steel, carbon steel, aluminum, and free-machining stainless steel workpieces requiring 1/2-13 UNC right-hand internal threads in blind-hole or through-hole configurations.

Installation Notes

This tap is installed by machinists using a standard tap wrench or tapping attachment; ensure the workpiece is securely fixtured before beginning. Always drill the correct tap drill size for 1/2-13 UNC before tapping and clear chips frequently, especially in blind-hole operations, to prevent tap breakage. Apply a suitable cutting fluid for the material being tapped. Do not force the tap if resistance increases suddenly — back off to break and clear chips before continuing.