Value Collection 24003020 Chucking Reamer Letter N

Product Description

The VALUE COLLECTION 24003020 is a solid carbide chucking reamer sized to Letter N, delivering a decimal diameter of 0.3020 inches with a tight tolerance of +0.0003 to -0.0000 inches. It features a straight flute geometry and a straight shank for use in standard drill chucks and collet holders. With an overall length of 6 inches and a flute length of 1.5 inches, this four-flute reamer is built for right-hand cutting in production and job-shop holemaking operations. The bright, polished finish reduces friction and aids chip evacuation. Machinists and tool and die professionals rely on this style of reamer to bring drilled or bored holes to final size and finish.

This reamer is suited for finishing holes in ferrous and non-ferrous materials where close dimensional control is required. Letter N sizing places the finished bore in the 0.3000 to 0.3499 inch diameter range, making it a common choice for precision fit applications in manufacturing, maintenance, and repair environments. It is intended for use in a machine spindle - mill, drill press, or lathe - not for hand reaming. The straight flute design is appropriate for through-holes and short blind holes where chip control is manageable.

Key Features

• Letter N diameter - 0.3020 inches decimal equivalent
• Tight tolerance of +0.0003 to -0.0000 inches for precise final sizing
• Four straight flutes with bright polished finish for smooth cutting action
• Solid carbide construction for hardness and wear resistance
• Right-hand cut with straight shank for compatibility with standard chucks and collets
• 6 inch overall length with 1.5 inch flute length

Compatibility

Designed as a machine-use chucking reamer for straight-shank toolholders, collet chucks, and drill chucks in mills, drill presses, and lathes where Letter N diameter holes are required.

Installation Notes

This reamer is intended for machine spindle use only - do not use as a hand reamer. Secure the straight shank firmly in a collet or drill chuck before operation. Ensure the workpiece is rigidly fixtured and the spindle is properly aligned to the existing pilot hole to avoid deflection and oversize conditions. Apply cutting fluid appropriate for the workpiece material to extend tool life and improve surface finish.