Hertel 2329712 Hand Reamer 1/2 in 6 Flute Spiral Hss

Product Description

The HERTEL 2329712 is a hand reamer designed to finish-ream drilled holes to precise tolerances in metal fabrication and machining applications. Built from high speed steel with a bright uncoated finish, it delivers consistent cutting performance on ferrous and non-ferrous materials. The 1/2-inch diameter reamer features six spiral flutes with a left-hand spiral direction and right-hand cutting action, a combination that helps draw chips away from the cutting edge and reduces chatter during hand reaming operations. At 6 inches overall length with a 3-inch flute length, it fits standard tap wrench handles for manual use.

This reamer is suited for tool and die, maintenance, and general machining work where a finish-reamed bore is required after drilling or rough boring. The straight shank seats securely in a tap wrench or reamer handle for controlled, low-speed hand operation. It is appropriate for use in job shops, maintenance facilities, and field repair environments where a portable, hand-driven finish reamer is needed to bring hole diameters to final size.

Key Features

• 1/2-inch diameter with 0.5000-inch decimal tolerance for precise hole finishing
• Six spiral flutes with left-hand helix promote chip evacuation during right-hand cutting
• High speed steel construction resists wear on a range of workpiece materials
• Bright uncoated finish maintains sharp cutting edges without added coating buildup
• 3-inch flute length provides adequate cutting surface for typical bore depths
• Straight shank compatible with standard tap wrenches and reamer handles

Compatibility

Designed as an OEM-style hand reamer for use with standard tap wrenches and reamer handles accepting a straight shank in the 1/2-inch diameter class.

Installation Notes

Hand reamers are installed and operated by machinists or maintenance technicians using a tap wrench or adjustable reamer handle. Secure the workpiece before reaming and apply cutting fluid appropriate for the workpiece material to extend tool life and improve surface finish. Always rotate the reamer in the cutting direction only — reversing rotation can dull or chip the cutting edges. Follow applicable shop safety procedures and use proper eye protection when performing reaming operations.