Osg 61527 Screw Machine Drill Bit 0.1063 in Hss

Product Description

The OSG 61527 is a screw machine length drill bit designed for high-performance drilling in metalworking applications. It measures 0.1063 inches (2.70 mm) in diameter with an overall length of 48.00 mm and a 130-degree faceted point angle suited for entry control and reduced thrust on harder materials. The bit is manufactured from high speed steel with a coated finish for improved wear resistance. A web-thinned, tapered web configuration reduces cutting resistance at the tip, making this bit well suited for production drilling environments where cycle time and tool life are priorities.

This drill bit is intended for use in screw machine operations, CNC drilling centers, and manual drill press applications across metalworking shops and machining facilities. It is rated for drilling in steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate workpiece materials. The screw machine length format provides added rigidity compared to jobber-length bits, making it a practical choice for short-hole drilling in tight setups or gang-drilling fixtures. Licensed machinists, tool and die makers, and production drilling operators are the primary installers and users.

Key Features

• 0.1063 inch (2.70 mm) cutting diameter with a tolerance of +0 to -0.014 mm for dimensional accuracy
• 130-degree faceted point angle reduces walking and improves entry on flat and curved surfaces
• Web-thinned tapered web lowers thrust requirements and eases chip evacuation
• High speed steel construction with a coated finish extends tool life in abrasive and harder workpiece materials
• Screw machine length (5xD flute-to-diameter ratio) provides increased rigidity over jobber-length alternatives
• Right-hand spiral flute with straight-cylindrical shank fits standard drill chucks and collet holders

Compatibility

Designed as a direct-fit replacement or production drill bit for applications requiring a 0.1063 inch diameter, straight-cylindrical shank drill in the OSG Series 1100 lineup. Compatible workpiece materials include steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or tooling personnel familiar with proper chuck-to-shank seating and runout verification. Ensure the drill press, lathe turret, or CNC spindle is fully stopped and locked out before inserting or removing the bit. Use appropriate cutting fluid or coolant for the workpiece material to maximize tool life, noting that this bit does not support through-coolant. Verify spindle speed and feed rate against published cutting data for the target material before production runs.