Cleveland C54350 Hand Tap 10-32 Unf Bottoming Hss

Product Description

The CLEVELAND C54350 is a 10-32 UNF straight-flute hand tap designed for cutting internal threads in both blind and through-hole applications. Built from high speed steel with a bright uncoated finish, this bottoming chamfer tap completes threading close to the bottom of a blind hole where plug or taper taps cannot reach. It carries a Class 3B fit and H2 thread limit, producing tight-tolerance threads suited for precision assemblies. Overall length is 2.375 inches with a 0.5 inch thread length. Machinists, tool-and-die makers, and maintenance technicians use this tap for hand-tapping operations in production and repair environments.

The C54350 is rated for use in alloy steel, carbon steel, aluminum, and free-machining stainless steel. Its 4-flute straight-flute geometry provides good chip support and thread form accuracy in these materials. The bottoming chamfer — typically 1 to 2 threads of lead — makes this tap the correct choice when full thread depth is required to the bottom of a blind hole. It fits standard tap wrench drives via a 0.194 inch shank diameter and 0.25 inch square drive length, and is sold individually.

Key Features

• Bottoming chamfer for threading close to the bottom of blind holes
• High speed steel construction for durability across a range of work materials
• Bright uncoated finish — compatible with cutting oils and standard tapping fluids
• 4-flute straight-flute design provides strong thread form and chip control
• Class 3B fit with H2 thread limit for tight-tolerance thread production
• Standard 0.25 inch square drive compatible with most hand tap wrenches

Compatibility

Designed for use in standard tap wrenches accepting a 0.194 inch shank diameter. Suitable for blind-hole and through-hole threading operations in alloy steel, carbon steel, aluminum, and free-machining stainless steel per Series 1003 application ratings.

Installation Notes

Hand tapping should be performed with the workpiece secured and the tap aligned perpendicular to the hole to prevent thread crossover or tap breakage. Apply appropriate cutting fluid for the work material before and during tapping. For blind holes, clear chips periodically by reversing the tap to prevent packing and breakage. Follow applicable shop safety practices when working with cutting tools.