Cleveland C54864 Hand Tap M20x2.50 Taper 6H Hss

Product Description

The CLEVELAND C54864 is a straight-flute hand tap designed for cutting M20x2.50 metric coarse internal threads in both blind and through-hole applications. Built from bright, uncoated high speed steel, this 4-flute tap features a taper chamfer to guide thread engagement gradually from the start of the cut. It carries a 6H class of fit with a D7 thread limit, making it suitable for standard tolerance threaded fastener fits. Overall length is 4.469 inches with a 2.0-inch thread length. Machinists, toolmakers, and maintenance technicians use this tap for hand-threading operations in a shop or field environment.

This tap is suited for blind-hole and through-hole threading in materials including alloy steel, carbon steel, aluminum, and free-machining stainless steel. The taper chamfer style distributes cutting load across several leading threads, which reduces the force needed to start the tap and helps maintain thread form consistency. It is appropriate for low-volume production, repair threading, and prototype work where a hand-driven or tap-wrench operation is preferred over machine tapping.

Key Features

• M20x2.50 metric coarse thread form with 6H class of fit and D7 thread limit
• Taper chamfer for gradual thread engagement in blind and through-hole applications
• High speed steel construction provides wear resistance across a range of workpiece materials
• Bright, uncoated finish — no coating variables to account for in tolerance or lubrication selection
• 4-flute straight-flute geometry for balanced cutting and chip management in through-hole work
• 0.652-inch shank diameter with 0.489-inch square drive size for standard tap wrenches

Compatibility

Designed for hand-tapping M20x2.50 metric coarse threads in alloy steel, carbon steel, aluminum, and free-machining stainless steel workpieces. Part of the Cleveland Series 1001 tap line.

Installation Notes

This tap is intended for use with a standard tap wrench; secure the square shank drive firmly before applying torque. Always back the tap off periodically to break chips, particularly in blind-hole applications. Apply an appropriate cutting fluid for the workpiece material to extend tap life and maintain thread quality. Inspect the pre-drilled pilot hole diameter against M20x2.50 tap drill specifications before beginning the threading operation.