Alvord Polk 09604 Taper Pin Reamer 5 Mm Hss 6 Flute

Product Description

The ALVORD POLK 09604 is a straight-flute taper pin reamer machined from high speed steel (HSS) for hole enlarging, hole finishing, and hole shaping in steel workpieces. It carries a 5 mm taper pin size with a small end diameter of 0.1929 inches and a large end diameter of 0.2506 inches, following a 1:50 taper rate. The six-flute geometry promotes smooth stock removal and a clean finish in the reamed bore. The bright, uncoated surface is suited for general-purpose work where a coated tool is not required. Machinists and tool-and-die tradespeople will recognize this as a standard production reamer for taper pin hole preparation.

This reamer is used in general machining environments where taper pin holes must be sized or finished to accept standard 5 mm taper pins. Typical applications include precision assemblies in manufacturing and maintenance settings where taper pins secure collars, hubs, or levers to shafts. The right-hand cut and square shank make it compatible with standard drill press and milling machine setups. It is well suited for both production runs and maintenance repair operations (MRO) involving steel components.

Key Features

• High speed steel construction for general-purpose reaming in steel
• 1:50 taper rate matches standard 5 mm taper pin specifications
• Six straight flutes for smooth cutting action and clean bore finish
• Bright, uncoated finish - no coating to interfere with close-tolerance work
• Right-hand cut with square shank for use in standard machine tool holders
• Overall length of 4.531 inches with a 3.425-inch flute length for reach into typical assemblies

Compatibility

Designed as an OEM-style replacement and general-use reamer for applications requiring a standard 5 mm taper pin hole preparation in steel workpieces.

Installation Notes

This reamer is intended for use by machinists in drill press, milling machine, or lathe tailstock setups. Secure the square shank firmly in an appropriate holder before operation, and ensure the workpiece is clamped to prevent movement during reaming. Use cutting fluid appropriate for steel when reaming to extend tool life and improve surface finish. Never force the reamer through an undersized pilot hole - pre-drill or rough-ream to within a close allowance before finishing with this tool.