M.a. Ford. 27231600 Chucking Reamer Letter O Solid Carbide

Product Description

The M.A. FORD. 27231600 is a solid carbide chucking reamer sized to Letter O, with a decimal diameter of 0.3160 inches. It is designed for precision hole finishing in metalworking and machining applications where tight tolerances are required. The reamer features a straight flute geometry and right-hand cutting direction, paired with a straight shank for secure chuck mounting. With a diameter tolerance of +0.0001 to +0.0003 inches, it holds the close fits demanded in production and tool-room environments. Machinists and CNC operators use this reamer as a final-pass tool to bring drilled or bored holes to finished size.

This reamer is suited for use in machine shops, manufacturing facilities, and maintenance operations where Letter O diameter holes must meet tight dimensional requirements. It fits drilling chucks and collet-style holders on knee mills, drill presses, CNC machining centers, and manual lathes. With an overall length of 3.25 inches and a flute length of 1.125 inches, it is appropriate for shallow-to-moderate depth reaming passes in ferrous and non-ferrous materials. No coolant-through capability is present, so external coolant or cutting fluid application is standard practice when surface finish and tool life are priorities.

Key Features

• Letter O diameter (0.3160 inches) with +0.0001 to +0.0003 inch tolerance for precise hole finishing
• Solid carbide construction for rigidity and wear resistance in demanding materials
• Straight flute, 6-flute design for smooth cutting action and chip control
• Right-hand cut with straight shank for standard chuck and collet compatibility
• Overall length of 3.25 inches and flute length of 1.125 inches suit moderate-depth applications
• Uncoated finish suitable for use with cutting fluids across a range of workpiece materials

Compatibility

Designed as an OEM-style machine reamer for use in standard drilling chucks and collet holders on CNC machining centers, knee mills, drill presses, and manual lathes requiring a Letter O diameter finish pass.

Installation Notes

This reamer is installed and operated by machinists and CNC operators following standard machine tool safety procedures. Ensure the machine spindle is fully stopped and the tool holder is secure before mounting or removing the reamer. Apply appropriate cutting fluid externally during reaming to extend tool life and achieve target surface finish. Follow shop-specific feeds and speeds for solid carbide reamers in the material being machined; never force the reamer into an undersized hole.