Hertel K008184AS Straight Flute Tap 8-32 Unc Hss

Product Description

The HERTEL K008184AS is a straight flute tap designed to cut 8-32 UNC internal threads in through-holes and blind holes where chip evacuation is manageable. Built from high-speed steel (HSS) with a bright, uncoated finish, this tap delivers consistent thread quality across a wide range of ferrous and non-ferrous materials. The taper chamfer distributes cutting load across several leading threads, making it well suited for starting a thread and progressing through softer workpiece materials. With an overall length of 2.125 inches and 4 flutes, it fits standard tap handles and machine tapping chucks in the 8-32 size range.

This tap is used in general machining, maintenance, repair, and fabrication environments where 8-32 UNC threaded holes are required. The 3B class of fit designation means it produces threads meeting standard tolerance limits suitable for most commercial fastener applications. The H2 thread limit indicates a controlled oversize grind that accounts for slight material springback, helping produce a clean 3B fit in typical steel and aluminum stock. Machinists, tool-and-die technicians, and maintenance mechanics commonly reach for this tap in both manual tapping and light machine tapping operations.

Key Features

• 8-32 UNC thread form with 4 straight flutes for balanced cutting and chip clearance
• Taper chamfer distributes cutting forces gradually, reducing tap breakage risk on entry
• H2 thread limit grind produces consistent 3B class of fit threads
• High-speed steel construction provides toughness and wear resistance across common workpiece materials
• Bright uncoated finish allows easy visual wear inspection during use
• Right-hand thread direction; compatible with standard tap wrenches and machine tapping attachments

Compatibility

Designed as a standard replacement or stock tap for applications requiring 8-32 UNC, 3B class of fit threads; fits standard tap holders and wrenches sized for the number 8 tap body diameter.

Installation Notes

Straight flute taps of this type are installed by machinists and maintenance mechanics using a calibrated tap wrench or machine tapping chuck. Always secure the workpiece firmly and ensure the tap is started perpendicular to the hole surface to avoid cross-threading or breakage. Apply an appropriate cutting fluid for the workpiece material to extend tap life and improve thread finish. For machine tapping, verify spindle speed and feed rate are appropriate for HSS tooling in the selected material before engaging the tap.