Kennametal 4150270 Screw Machine Drill Bit 9.30mm

Product Description

The KENNAMETAL 4150270 is a screw machine length (stub) solid carbide drill bit engineered for precision hole-making in demanding production environments. Designed for right-hand cutting with a standard 140-degree point angle, this bit features a multilayer TiAlN coating applied at the tip to extend tool life and resist heat buildup during high-speed drilling operations. The straight-cylindrical shank measures 10.00 mm in diameter and seats securely in standard drill chucks or collet holders. With an overall length of 3.50 inches and a cutting diameter of 9.30 mm (0.3661 inches), it belongs to Kennametal Series B041A-CPG and conforms to DIN 6537K specifications. Machinists and toolroom technicians working in metal fabrication and machining centers will find this bit suited for short-hole drilling applications where rigidity and accuracy are critical.

This stub-length carbide drill is intended for use in CNC machining centers, drill presses, and production screw machines where a compact tool profile reduces deflection and improves hole location accuracy. The 3xD flute-to-diameter ratio and tapered web configuration support chip evacuation in ferrous and non-ferrous materials. The maximum drilling depth is 35.00 mm (1.38 inches), making it appropriate for through-holes and blind holes in short-to-medium stock thicknesses. Installation is straightforward in any machine tool spindle accepting a 10.00 mm straight shank, with no special tooling adapters required for standard setups.

Key Features

• Solid carbide construction for rigidity and wear resistance in high-speed machining
• TiAlN multilayer coating at tip reduces heat buildup and extends cutting life
• 140-degree point angle minimizes walking and supports accurate hole entry
• Tapered web design promotes chip flow and reduces thrust force
• DIN 6537K compliant for dimensional consistency and interchangeability
• Stub (screw machine) length profile reduces deflection compared to jobber-length bits

Compatibility

Designed for use in machine tool spindles accepting a 10.00 mm straight-cylindrical shank. Fits standard drill chucks and collet systems within the 8.00 mm to 9.50 mm drill bit size range per Series B041A-CPG specifications.

Installation Notes

Installation should be performed by a qualified machinist following the machine tool manufacturer guidelines. Ensure the spindle is fully powered down and the machine is locked out before changing tooling. Seat the straight shank fully and evenly in the collet or chuck before tightening to the tool holder manufacturer torque specifications. Do not exceed the maximum drilling depth of 35.00 mm to avoid tool breakage or workpiece damage.