Osg 220-2380 Solid Carbide Jobber Drill Bit Letter B

Product Description

The OSG 220-2380 is a solid carbide jobber-length drill bit sized to Letter B (0.2380 inch / 6.05 mm) with a 118-degree web-thinned point. It belongs to OSG Series 220D and is built for general-purpose drilling in a wide range of ferrous and non-ferrous materials. The bright, uncoated finish suits applications where coating compatibility with workpiece material or cutting fluid chemistry is a consideration. With an overall length of 3.25 inches and a 2-inch flute length, this bit fits standard drill chucks and CNC toolholders with a straight-cylindrical shank. Machinists, tool-and-die technicians, and maintenance mechanics install this type of bit in both manual and CNC drilling operations.

The 220-2380 is suited for blind-hole drilling, cross-hole drilling, and self-centering applications across production and job-shop environments. Primary target materials include steel, alloy steel, stainless steel, cast iron, aluminum, aluminum alloy, and aluminum silicate. The regular spiral flute promotes chip evacuation in these materials without requiring through-spindle coolant. This bit fits the typical jobber-length reach requirements in light to medium drilling work on machining centers, drill presses, and hand-held power tools.

Key Features

• Solid carbide construction for rigidity and wear resistance in ferrous and non-ferrous materials
• Letter B diameter (0.2380 inch / 6.05 mm) with a tight tolerance of +0 to -0.013 mm
• 118-degree web-thinned point reduces entry thrust and supports self-centering starts
• Regular spiral flute with tapered web configuration promotes chip flow in blind and cross-hole applications
• Bright uncoated finish — compatible with most cutting fluids without coating interaction concerns
• Right-hand cut, 2-flute design suitable for drilling steel, stainless, cast iron, aluminum, and aluminum alloys

Compatibility

Designed as a general-purpose jobber-length drill bit for use in standard straight-shank chucks and CNC toolholders. Compatible with workpiece material codes P, M, K, and N per ISO cutting material classification, covering steel, stainless steel, cast iron, and non-ferrous materials.

Installation Notes

Install in a properly sized straight-shank drill chuck or collet holder and confirm runout before drilling. Power down the machine and lock out energy sources before changing tooling per OSHA lockout-tagout requirements. Carbide is brittle — avoid lateral loading, interrupted cuts without proper feed adjustment, or dropping the bit on hard surfaces. Verify spindle speed and feed rate are appropriate for the workpiece material and bit diameter before starting the cut.