Osg 300-2810 Chucking Reamer Letter K Solid Carbide

Product Description

The OSG 300-2810 is a solid carbide chucking reamer designed to produce precise, finished holes in metal workpieces. It carries a Letter K designation, corresponding to a diameter of 0.2810 inches, with a tight tolerance range of +0.0001 to +0.0005 inches to ensure accurate hole sizing. The reamer features a straight flute geometry and straight cylindrical shank, making it compatible with standard chucking setups on lathes and drill presses. With 6 flutes and a right-hand cutting direction, it delivers a clean, consistent finish suited to general machining applications. The bright, uncoated carbide construction provides hardness and wear resistance across a range of workpiece materials.

This reamer is intended for general machining environments where precise hole tolerances are required. It is well suited for production and job-shop settings where machinists need a reliable, OEM-quality carbide reamer for finishing drilled or bored holes to Letter K specifications. The 1.125-inch flute length and 3.25-inch overall length make it appropriate for shallow-to-moderate depth reaming operations in standard CNC or manual machine tool setups.

Key Features

• Solid carbide construction for hardness and extended tool life in general machining applications
• Letter K diameter (0.2810 inches) with tolerance of +0.0001 to +0.0005 inches for precision hole finishing
• 6-flute straight design promotes smooth cutting action and consistent surface finish
• Straight cylindrical shank for secure seating in standard chuck or collet holders
• Right-hand cutting direction compatible with conventional machine tool rotation
• Bright, uncoated finish — no coating buildup to alter critical diameter dimensions

Compatibility

Designed as a standard solid carbide chucking reamer for general machining applications, compatible with lathes, drill presses, and CNC machining centers equipped with standard straight-shank chuck or collet toolholding systems.

Installation Notes

Installation and use should be performed by a qualified machinist or toolroom technician. Ensure the machine spindle is fully stopped and locked out before mounting or removing the reamer from the chuck or collet. Secure the straight shank firmly to prevent runout, which can negatively affect hole tolerance and tool life. Always apply appropriate cutting fluid for the workpiece material to extend tool life and maintain surface finish quality.