Value Collection 144429601800000 Chucking Reamer Letter R Hss

Product Description

The VALUE COLLECTION 144429601800000 is a straight-flute chucking reamer designed for precision hole finishing in metalworking applications. Sized at Letter R with a decimal diameter of 0.3390 inches, this reamer is manufactured from high-speed steel (HSS) and features a bright, uncoated finish. The straight-cylindrical shank seats securely in standard drill chucks and collet holders. With a 6-inch overall length and a 1.5-inch flute length, it is built for right-hand cutting and is well suited for machine reaming operations where tight bore tolerances are required. Licensed machinists and tool-and-die professionals are the primary users of this style of reamer.

This chucking reamer is used in general machining environments including job shops, maintenance and repair operations, and production floors. It is appropriate for reaming holes in steel, cast iron, aluminum, and similar machinable metals where a final pass is needed to achieve a precise fit for pins, dowels, or close-tolerance fasteners. The straight flute geometry makes it best suited for through-holes and shorter blind holes where chip evacuation is not a limiting factor.

Key Features

• Letter R size with a decimal diameter of 0.3390 inches for precise hole sizing
• High-speed steel (HSS) construction provides wear resistance across common shop materials
• Straight-cylindrical shank compatible with standard drill chucks and collet systems
• Straight flute, right-hand cutting geometry suited for through-holes and short blind holes
• Bright, uncoated finish — no coating buildup at the cutting edge
• 6-inch overall length with a 1.5-inch flute length for controlled material removal

Compatibility

Designed as an OEM-style replacement or direct-use chucking reamer for machine tools accepting a straight-cylindrical shank in the Letter R diameter range (0.3000 to 0.3499 inches decimal).

Installation Notes

Chucking reamers are installed by machinists in drill presses, lathes, milling machines, or CNC machining centers. Secure the straight-cylindrical shank firmly in a drill chuck or collet before operation and confirm runout is within acceptable limits before cutting. Always pre-drill the hole to within a few thousandths of the final diameter before reaming — do not use a chucking reamer to remove large amounts of material. Use appropriate cutting fluid for the workpiece material to extend tool life and improve surface finish.