Cleveland C54595 Hand Tap 3/8-24 Unf Taper 4-flute Hss

Product Description

The CLEVELAND C54595 is a straight-flute hand tap designed for cutting 3/8-24 UNF internal threads in metalworking applications. Built from high speed steel with a bright uncoated finish, it features a taper chamfer and four flutes that guide chip flow and maintain thread accuracy during hand-tapping operations. The tap carries a Class 3B fit and H3 thread limit, making it appropriate for close-tolerance threaded holes where dimensional consistency matters. Overall length is 2.938 inches with a thread length of 0.75 inches. Machinists and tool-and-die professionals reach for this style of tap when cutting threads by hand or in low-speed machine setups.

This tap is suited for blind-hole and through-hole threading in a range of ferrous and non-ferrous materials including alloy steel, carbon steel, aluminum, and free-machining stainless steel. It is a standard production tap appropriate for job shops, maintenance-and-repair operations, and general fabrication environments where 3/8-24 UNF threads are routinely required. The taper chamfer distributes cutting load across the leading threads, which reduces starting torque and helps align the tap squarely at entry.

Key Features

• 3/8-24 UNF thread form with Class 3B fit and H3 thread limit for close-tolerance applications
• Taper chamfer distributes cutting load and aids square entry in both blind and through holes
• Four-flute straight-flute geometry provides stable cutting action in short-chipping materials
• High speed steel construction withstands the heat and wear of production hand-tapping
• Bright uncoated finish allows direct visual inspection of cutting edges before and after use
• Right-hand thread direction, no coolant-through requirement, compatible with standard tap wrenches and holders

Compatibility

Designed as an OEM-style replacement or standard production tap for any application requiring 3/8-24 UNF internal threads. Compatible with alloy steel, carbon steel, aluminum, and free-machining stainless steel workpieces in blind-hole and through-hole configurations.

Installation Notes

Installation is performed by machinists or maintenance technicians using a standard tap wrench or tapping fixture. Ensure the workpiece is secured and the pilot hole diameter matches the recommended tap drill size for 3/8-24 UNF before starting. Apply appropriate cutting fluid for the workpiece material to reduce heat buildup and extend tap life. Back the tap off periodically to break chips when working in blind holes.