Cleveland C57216 Spiral Point Tap 1/2-13 Unc Hss

Product Description

The CLEVELAND C57216 is a spiral point tap designed for through-hole threading in a wide range of metalworking applications. Operating on a 1/2-13 UNC thread standard, this plug-chamfer tap drives chips forward ahead of the cutting action, making it well suited for threading through-holes in production and maintenance environments. The tap is manufactured from high speed steel with a bright finish and carries an H5 thread limit with a Class 2B fit, delivering accurate, consistent threads without oversize cutting. Licensed machinists, maintenance technicians, and toolroom professionals reach for this tap when threading ferrous and non-ferrous workpieces by hand or under power.

The C57216 is used in through-hole threading operations on alloy steel, aluminum, and carbon steel workpieces. Its plug chamfer — featuring a gradual lead-in of several threads — makes it a reliable choice for production tapping where holes pass completely through the material. The three-flute design provides good chip clearance and cutting stability in moderate-depth applications. This tap fits standard tap handles and power tapping heads compatible with the 1/2-13 thread size and shank dimensions of the Series 1011.

Key Features

• 1/2-13 UNC thread form with Class 2B fit and H5 thread limit for precise tolerance control
• Spiral point geometry pushes chips forward, keeping the cutting zone clear in through-hole applications
• High speed steel construction provides durability across alloy steel, aluminum, and carbon steel
• Plug chamfer allows gradual thread engagement, reducing torque demand on entry
• Bright finish with no coating — suitable for use with cutting fluids appropriate to the workpiece material
• Right-hand thread direction; no coolant-through feature

Compatibility

Designed for through-hole threading applications in alloy steel, aluminum, and carbon steel. Fits standard 1/2-13 tap holders and power tapping chucks compatible with the Series 1011 shank dimensions.

Installation Notes

This tap is installed by a machinist or maintenance technician using a standard tap wrench or power tapping head. Secure the workpiece firmly before tapping and ensure the hole is drilled to the correct tap-drill diameter for a 1/2-13 thread before starting. Apply an appropriate cutting fluid for the workpiece material to reduce heat and extend tool life. Reverse the tap periodically when hand-tapping harder materials to break chips and prevent tap breakage.