Osg 215-0669 Screw Machine Drill Bit Size 51 Carbide

Product Description

The OSG 215-0669 is a screw machine length drill bit designed for short-hole drilling applications requiring precision and rigidity. Built from solid carbide, this bit delivers consistent performance in hard and abrasive materials where high-speed steel tooling falls short. The 135-degree split point reduces walking at entry and lowers thrust force, making it well suited for tight-tolerance work. At 0.0670 inches in diameter with an overall length of 1.6929 inches, this bit fits compact drill chucks and close-clearance fixtures. The bright, uncoated finish is standard for carbide grades where coating adhesion is not required.

This drill bit is used in precision machining environments including CNC drilling centers, drill presses, and screw machine operations. Wire gauge size 51 positions it in the small-diameter range, commonly used for pilot holes, tap drilling, and fine detail work in metals, composites, and plastics. Machinists, tool and die makers, and production drilling operators are the primary users. Its screw machine length profile provides added stiffness compared to jobber-length bits, reducing deflection in short-reach applications.

Key Features

• Solid carbide construction for high wear resistance in hard and abrasive materials
• 135-degree standard point angle reduces entry walking and cutting force
• Screw machine length body increases rigidity and reduces deflection
• Slow spiral flute geometry suits hard materials and short-chip applications
• Straight-cylindrical shank fits standard drill chucks and collets without modification
• Bright uncoated finish, no coating buildup affecting diameter tolerance

Compatibility

Designed as an OEM-style screw machine length drill bit for use in standard straight-shank drill chucks and collet systems accepting a 0.0669-inch shank diameter.

Installation Notes

Installation and use of this bit should be performed by qualified machinists or tooling technicians. Ensure the machine spindle is fully stopped and locked out before changing tooling. Seat the straight shank fully into the chuck or collet and verify runout before drilling. Do not exceed the rated speed range for the workpiece material and bit diameter.