Osg HP243-2343 Screw Machine Drill Bit 15/64 in Carbide

Product Description

The OSG HP243-2343 is a screw machine length drill bit designed for high-performance drilling in steel and cast iron. Built from solid carbide and coated with OSG's proprietary EgiAs multi-layer coating, this bit delivers extended tool life and reduced heat buildup in demanding production environments. The 140-degree point angle with R-Thinned web thinning reduces thrust force and improves centering without a pilot hole. At 66.00 mm overall length with a 3xD flute-to-diameter ratio, it is optimized for rigid, close-tolerance drilling in CNC machining centers and screw machines. Machinists, tool-and-die professionals, and production shop technicians are the primary users.

This drill bit is suited for production drilling in ferrous materials including carbon steel, alloy steel, and cast iron. The screw machine length format provides maximum rigidity and is commonly applied in high-cycle operations where hole accuracy and repeatability are critical. Typical applications include through-hole and blind-hole drilling on CNC lathes, machining centers, and dedicated drilling machines where short flute length and a stiff body reduce deflection and chatter.

Key Features

• Solid carbide construction for hardness and wear resistance in ferrous materials
• EgiAs proprietary multi-layer coating reduces friction and extends tool life
• 140-degree point angle with R-Thinned web thinning lowers entry thrust and improves self-centering
• Screw machine length with 3xD flute ratio maximizes rigidity and minimizes deflection
• Right-hand cutting with regular spiral flute geometry for consistent chip evacuation
• Straight cylindrical shank at 6.00 mm diameter fits standard collet and drill chuck tooling

Compatibility

Designed for use in CNC machining centers, CNC lathes, and screw machines equipped with collets or drill chucks accepting a 6.00 mm straight shank. Primary workpiece materials are steel and cast iron as specified by the manufacturer.

Installation Notes

Installation should be performed by a qualified machinist following shop safety procedures. Secure the shank fully in a collet or drill chuck rated for the spindle speed being used, and verify runout before cutting. Power down and lock out the machine spindle before changing or inspecting the bit. Do not use this bit in hand-held drilling applications; screw machine length carbide bits require rigid machine tool support to prevent fracture.