Osg HP243-1102 Screw Machine Drill Bit 0.1102in Carbide

Product Description

The OSG HP243-1102 is a screw machine length drill bit designed for high-performance drilling in ferrous materials. Built from solid carbide with a TiAlN coating, it handles demanding production environments where tool life and hole quality matter. The 0.1102 inch (2.80 mm) diameter and compact screw machine length make it well-suited for close-tolerance work on CNC machining centers and automated drilling equipment. The 140-degree split point and R-thinned web reduce thrust and improve centering at entry, while the regular spiral flute geometry supports efficient chip evacuation at production feed rates.

This drill bit is rated for use in steel, alloy steel, and cast iron. The screw machine length format — shorter than jobber length — increases rigidity and reduces deflection in short-hole applications. It is a common choice in production shops, job shops, and tool rooms running batch work on mill-turn machines, CNC lathes, and vertical machining centers. The straight-cylindrical shank seats directly into standard drill chucks, collet chucks, and hydraulic toolholders without adapters.

Key Features

• Solid carbide construction for rigidity and wear resistance in ferrous materials
• TiAlN coating extends tool life at elevated cutting temperatures
• 140-degree drill point angle with R-thinned web reduces entry thrust and improves self-centering
• Regular spiral flute with 3xD flute-to-diameter ratio supports chip clearance in short-hole drilling
• Tapered web configuration adds core strength behind the cutting edges
• Right-hand cut, straight-cylindrical shank fits standard CNC and manual toolholding

Compatibility

Designed as an OEM-style replacement screw machine length drill bit for production drilling applications in steel, alloy steel, and cast iron workpieces using standard straight-shank drill toolholding systems.

Installation Notes

Installation is performed by machinists and toolroom technicians. Secure the shank fully in a collet, drill chuck, or hydraulic holder and verify runout before committing to production. Ensure the machine spindle is stopped and the tool is locked before any chuck or collet adjustment. Follow the machine manufacturer and OSG series recommendations for feeds and speeds appropriate to the workpiece material — do not extrapolate values from jobber-length tooling, as screw machine geometry alters optimal parameters.