Hertel K008235AS Straight Flute Tap 10-24 Unc Hss

Product Description

The HERTEL K008235AS is a straight flute bottoming tap designed to cut internal 10-24 UNC threads in through or blind holes where full thread depth close to the bottom is required. Manufactured from high-speed steel with a bright, uncoated finish, this tap delivers consistent thread form across a range of ferrous and non-ferrous workpiece materials. It features four flutes, an H3 thread limit for controlled fit, and is ground to a 2B and 3B class of fit. Overall length is 2.375 inches. The right-hand thread configuration follows standard UNC conventions. Machinists and tool-and-die professionals reach for this tap in both manual and machine tapping setups.

This tap is suited for production and maintenance machining environments where 10-24 UNC threads are required in blind holes with limited thread runout. The bottoming chamfer leaves only 1 to 2 incomplete threads at the start, making it the correct choice when the full thread must extend to near the bottom of a drilled hole. Typical applications include threading tapped inserts, fixture components, sheet metal assemblies, and machine parts in job shop, manufacturing, and maintenance repair operations contexts.

Key Features

• Bottoming chamfer for threading close to the bottom of blind holes
• Four flutes provide good chip clearance and stable cutting action
• H3 thread limit ensures consistent fit for 2B and 3B class-of-fit requirements
• High-speed steel construction handles a broad range of workpiece materials
• Bright, uncoated finish suitable for use with standard tapping fluids
• Right-hand thread, 10-24 UNC - compatible with standard 10-24 fastener systems

Compatibility

Designed as an OEM-style replacement or direct-use tap for manual tap handles and machine tapping chucks sized for standard fractional and number-size taps used in 10-24 UNC thread applications.

Installation Notes

This tap is installed and operated by machinists or maintenance technicians using a tap wrench, tapping head, or CNC tapping cycle. Always use an appropriate tapping fluid or cutting oil for the workpiece material, and ensure the tap is started square to the drilled hole to prevent breakage. The pilot hole should be drilled to the correct tap drill diameter for 10-24 UNC thread engagement before tapping. Coolant-through is not supported on this tap.