Hertel 2329654 Hand Reamer 0.4062 in 6 Flutes Hss

Product Description

The HERTEL 2329654 is a spiral-flute hand reamer designed for precision hole finishing in metal fabrication and machining applications. It features a 0.4062-inch diameter cutting profile with 6 flutes and a 2.63-inch flute length, providing clean, accurate final sizing of pre-drilled or bored holes. Constructed from high-speed steel (HSS) with a bright, uncoated finish, this reamer offers solid wear resistance for general-purpose reaming. The straight shank suits standard hand reamer drivers and compatible machine chucks. It is suitable for machinists, toolmakers, and maintenance technicians working in job shops, production environments, and maintenance-repair operations.

This hand reamer is used for finishing holes to a precise 0.4062-inch diameter in ferrous and non-ferrous metals. The spiral flute geometry runs left-hand spiral with right-hand cut, which helps pull chips away from the cutting zone and reduces chatter during hand-driven or slow-speed machine operation. With a 5.25-inch overall length and straight shank, it fits standard tap wrench handles and low-speed drill press setups. Typical applications include bearing bores, bushing fits, and close-tolerance pin holes where surface finish and dimensional accuracy are critical.

Key Features

• 0.4062-inch reamer diameter for precise hole finishing
• 6-flute spiral configuration with left-hand spiral and right-hand cut for effective chip evacuation
• High-speed steel construction for durability in general-purpose machining
• Bright uncoated finish suitable for use with standard cutting fluids
• Straight shank fits standard tap wrenches and compatible machine spindles
• 5.25-inch overall length with 2.63-inch flute length for controlled cutting depth

Compatibility

Designed as an OEM-style hand reamer for use with standard straight-shank tap wrenches and compatible low-speed machine spindles in general metalworking and maintenance applications.

Installation Notes

This reamer is installed and operated by machinists or maintenance technicians using a tap wrench or low-speed drill press. Always apply an appropriate cutting fluid for the workpiece material to extend tool life and improve surface finish. Ensure the workpiece is securely clamped and the hole is properly pre-drilled to near-finish size before reaming. Never force the reamer through an undersized hole, as this can damage the flutes or compromise hole geometry.