Osg 11546215 Screw Machine Drill Bit 0.201 in Hss

Product Description

The OSG 11546215 is a screw machine length drill bit designed for fast, accurate hole-making in a wide range of metalworking applications. Built from high speed steel with a coated finish, this bit delivers high performance cutting at a 120-degree faceted drill point angle. The right-hand spiral flute geometry with web thinning reduces thrust and promotes efficient chip evacuation. At 0.201 inches (wire size No. 7) in diameter and 70 mm overall length, this compact stub-length bit is well suited for precision drilling in tight workspaces. Licensed machinists, tool-and-die technicians, and production floor operators are the primary users.

This drill bit is intended for use on steel, alloy steel, aluminum, aluminum alloy, and aluminum silicate workpieces. The screw machine length format makes it a standard choice for CNC machining centers, drill presses, and turret lathes where minimal overhang and rigidity are priorities. The 3xD flute-to-diameter ratio supports controlled chip clearance in short-depth holes. It is packaged and sold as a single unit, making it practical for tool crib replenishment or bench stock in job shop environments.

Key Features

• 0.201 inch diameter, wire size No. 7, with a tolerance of +0 to -0.018 mm for precise hole sizing
• 120-degree faceted drill point with web thinning reduces entry thrust and improves point accuracy
• High speed steel construction with coated finish extends tool life in ferrous and non-ferrous materials
• Right-hand cut, regular spiral flute promotes positive chip flow out of the hole
• Straight-cylindrical shank at 6 mm diameter fits standard keyless and keyed drill chucks
• Screw machine (stub) length provides rigidity and reduces deflection in production drilling

Compatibility

Designed as an OEM-style replacement or direct stock bit for use in standard drill chucks and collet holders accepting a 6 mm straight-cylindrical shank, compatible with CNC machining centers, drill presses, and turret lathes set up for screw machine length tooling in the OSG Series 1150 product line.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician. Ensure the machine spindle is fully stopped and the power source is isolated before changing tooling. Secure the shank fully within the chuck or collet to the recommended grip depth to prevent slippage under load. Follow applicable shop safety standards and machine manufacturer guidelines for RPM and feed rate selection based on workpiece material.