Value Collection 557u 6 Taper Pin Reamer Size 6 Hss

Product Description

The VALUE COLLECTION 557u 6 is a size 6 taper pin reamer designed for hole enlarging, finishing, and shaping operations in metal fabrication and machine shop applications. Built from high speed steel (HSS), this reamer features a spiral flute geometry with a right-hand cutting direction and a left-hand spiral, a combination that promotes smooth chip evacuation and reduces chatter during the cut. The small end diameter measures 0.2773 inches and the large end measures 0.3540 inches, conforming to standard taper pin proportions at a 1:48 taper rate. The square shank seats securely in a tap wrench or compatible holder for consistent torque transfer. Machinists and tool-and-die professionals are the primary users of this tool.

This reamer is suited for general-purpose taper pin hole preparation in ferrous and non-ferrous metals. Typical applications include finishing tapered holes that receive standard number 6 taper pins used to secure shafts, hubs, and mechanical assemblies. The bright, uncoated finish makes it appropriate for use with cutting fluids or oils to extend tool life during production runs or maintenance reaming tasks. The 3.6875-inch flute length provides adequate cutting surface engagement for through-hole and blind-hole applications at this size range.

Key Features

• High speed steel construction for general-purpose metal cutting durability
• Spiral flute, left-hand spiral geometry promotes chip evacuation and reduces chatter
• Right-hand cutting direction compatible with standard tap wrench operation
• 1:48 taper rate conforms to standard taper pin specifications for size 6
• Square shank provides positive drive and prevents slippage in the holder
• Bright, uncoated finish compatible with a wide range of cutting fluids

Compatibility

Designed for use in standard size 6 taper pin holes conforming to the 1:48 taper rate. Fits tap wrenches and holders accepting a 0.3594-inch (23/64-inch) square shank.

Installation Notes

This tool is installed and operated by machinists, tool-and-die technicians, and maintenance mechanics. Secure the square shank firmly in a tap wrench or machine holder before use, and apply appropriate cutting fluid to the flutes to reduce heat and extend tool life. Always ream from the small end toward the large end in steady, even strokes. Inspect the hole diameter incrementally to avoid over-reaming beyond the required taper pin fit.