Cleveland C57611 Spiral Point Tap 8-32 Unc Hss

Product Description

The CLEVELAND C57611 is a spiral point plug tap designed for cutting 8-32 UNC internal threads in through-hole applications. Built from high speed steel with an oxide finish, it produces clean, accurate threads by driving chips forward ahead of the cutting zone, reducing clogging and heat buildup. The H3 thread limit and Class 2B fit classification make it suitable for standard-tolerance threading work. With a 2-flute geometry and plug chamfer, it is the standard choice for machine tapping in production and repair environments. Licensed machinists, maintenance mechanics, and tool and die tradespeople typically run this tap on manual mills, CNC machines, or drill presses.

This tap is intended for through-hole threading in materials including cast iron and steel. The spiral point design is best matched to through-holes where chips can exit freely from the front of the tap, rather than blind holes where chips would have nowhere to go. It is well suited to production runs and field repair work where consistent 8-32 UNC thread quality is required. The oxide finish provides a degree of lubricity and mild corrosion resistance during storage and use.

Key Features

• Spiral point geometry drives chips forward for unobstructed through-hole threading
• High speed steel construction handles cast iron and steel applications
• Oxide finish improves lubricity and reduces galling during cutting
• H3 thread limit with Class 2B fit for standard-tolerance thread production
• Plug chamfer provides easy starting and consistent thread form
• Right-hand thread direction for standard machine tapping setups

Compatibility

Designed as an OEM-style replacement spiral point tap for standard 8-32 UNC through-hole threading applications in cast iron and steel workpieces.

Installation Notes

This tap is installed and operated by machinists or maintenance mechanics using a tap wrench, tapping head, or CNC rigid tapping cycle. Always use appropriate tapping fluid or cutting oil rated for the workpiece material to extend tool life and improve thread finish. Ensure the workpiece is secured and the tap is aligned perpendicular to the hole before engagement. Do not reverse a broken tap under power; extraction requires proper tap extractor tooling.