Osg 61545 Screw Machine Drill Bit 0.177 in Hss 2 Flute

Product Description

The OSG 61545 is a screw machine length drill bit designed for high-performance drilling in metalworking applications. Built from high speed steel with a coated finish, this bit features a 0.177 inch (Wire Size 16, 4.50 mm) diameter, a 120-degree faceted drill point, and a web-thinned, tapered web configuration that reduces thrust and improves chip evacuation. The straight-cylindrical shank measures 6.00 mm in diameter, and the overall length is 68.00 mm. Its compact screw machine length makes it well-suited for close-tolerance drilling in production environments. Machinists and tooling specialists are the primary users of this drill bit.

The OSG 61545 is intended for drilling steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate workpieces. The screw machine length profile is common in CNC machining centers, turret lathes, and drill presses where rigidity and reduced deflection are required. The 2-flute spiral design with a regular spiral type provides consistent chip removal during through-hole and blind-hole operations. The 5xD flute-to-diameter ratio supports adequate flute length relative to cut depth at this diameter range, which spans 0.1500 to 0.2000 decimal inch.

Key Features

• 0.177 inch diameter with Wire Size 16 designation and diameter tolerance of +0 to -0.018 mm
• 120-degree faceted drill point with web thinning for reduced entry thrust
• High speed steel construction with coated finish for extended tool life on ferrous and non-ferrous materials
• 2-flute regular spiral configuration supports efficient chip evacuation
• Straight-cylindrical shank for standard chuck compatibility
• Screw machine length for improved rigidity in close-quarters and production drilling setups

Compatibility

Designed as an OEM-style replacement or standard tooling option for use in screw machine, CNC, turret lathe, and drill press setups requiring a Wire Size 16 or 0.177 inch diameter screw machine length drill bit.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or tooling technicians familiar with proper chuck torque procedures and cutting parameters. Ensure the machine spindle is fully stopped and locked out before inserting or removing the bit from the chuck. Do not exceed the recommended feed and speed parameters for the workpiece material being drilled. Coolant-through is not supported on this bit; apply flood or mist coolant externally when required by the application.