Hertel 2329571 Hand Reamer 0.2969 in 6 Flutes Hss

Product Description

The HERTEL 2329571 is a straight-shank hand reamer designed for precision hole finishing in metal workpieces. Built from high-speed steel (HSS) with a bright uncoated finish, this reamer delivers accurate sizing and smooth bore surfaces when driven by hand. It measures 0.2969 inches in diameter with a 2.25-inch spiral flute length and a 4.5-inch overall length. The six left-hand spiral flutes with right-hand cutting action reduce chatter and help pull chips away from the cutting zone, making it well-suited for controlled, repeatable finishing passes in close-tolerance applications.

This hand reamer is used in precision machining, toolroom work, and maintenance repair operations where final hole sizing is required after drilling. The right-hand cut with left-hand spiral configuration is a standard choice for machinists finishing through-holes and blind holes in steel, cast iron, aluminum, and similar materials. It is appropriate for use with a tap wrench or adjustable handle. Typical applications include bearing seat preparation, pin hole finishing, and close-tolerance fit work in both job shop and production environments.

Key Features

• 0.2969-inch reamer diameter for precise hole finishing
• Six spiral flutes for smooth cutting action and reduced chatter
• Left-hand spiral, right-hand cut geometry helps clear chips efficiently
• High-speed steel construction provides hardness and wear resistance
• Bright uncoated finish suited for general-purpose ferrous and non-ferrous materials
• Straight shank compatible with standard tap wrenches and reamer handles

Compatibility

Designed as a general-purpose hand reamer for use in standard tap wrenches and adjustable reamer handles accepting a straight shank at the corresponding diameter.

Installation Notes

Hand reamers are installed and operated by qualified machinists or maintenance technicians using a tap wrench or similar hand-drive tool. Secure the workpiece before reaming and apply cutting fluid appropriate for the workpiece material to extend tool life and improve finish quality. Never force the reamer through an undersized hole — the pilot hole should be drilled to the correct pre-ream diameter before use. Back the reamer out while continuing to rotate it in the cutting direction to avoid damaging the flutes.