Cleveland C54133 Hand Tap M2.5x0.45 Bottoming Hss

Product Description

The CLEVELAND C54133 is a straight-flute hand tap designed for cutting M2.5x0.45 metric coarse internal threads in both blind holes and through-holes. Built from high speed steel with a bright uncoated finish, it features a bottoming chamfer that allows threading close to the bottom of a blind hole. The tap has a 3-flute configuration, a right-hand thread direction, and meets Class of Fit 6H with a D3 thread limit. Overall length is 1.813 inches, with a thread length of 0.500 inches (12.70 mm). It is sized for use with standard tap wrenches and T-handle drivers compatible with a 0.110-inch square drive.

This tap is suited for machine shops, maintenance facilities, and tool-and-die operations where precise M2.5x0.45 metric coarse threads are required. Its bottoming chamfer makes it particularly useful when threads must extend to the full depth of a blind hole, such as in small-fastener applications on precision assemblies. Compatible material applications include alloy steel, aluminum, carbon steel, and free-machining stainless steel, making it a versatile choice across a range of workpiece materials.

Key Features

• Bottoming chamfer for threading to the base of blind holes
• High speed steel construction for durability across ferrous and non-ferrous materials
• Bright uncoated finish suitable for use with cutting oils and general-purpose tapping fluids
• 3-flute straight flute design provides chip clearance in short-chipping materials
• 6H Class of Fit with D3 thread limit for standard metric tolerance threading
• Right-hand thread direction, no coolant-through requirement

Compatibility

Designed for blind hole and through-hole threading in alloy steel, aluminum, carbon steel, and free-machining stainless steel workpieces requiring M2.5x0.45 metric coarse threads to a 6H Class of Fit.

Installation Notes

This tap is installed by hand or with a tap wrench and should be used with an appropriate cutting fluid for the workpiece material. Before tapping, ensure the pilot hole diameter is correct for the M2.5x0.45 thread specification per standard drill-tap charts. Secure the workpiece before starting to prevent movement during threading. When using a bottoming tap in a blind hole, clear chips frequently to avoid tap breakage.