Kennametal 4150367 21/32 in Carbide Stub Drill Bit 140 Deg

Product Description

The KENNAMETAL 4150367 is a screw machine length (stub) solid carbide drill bit designed for high-performance drilling in metal and hard materials. With a 21/32 inch (0.6562 inch) diameter, a 140-degree standard point angle, and a multilayer TiAlN coating applied at the tip, it delivers excellent wear resistance and heat management in demanding production environments. The straight-cylindrical shank measures 0.7087 inches in diameter and 1.8898 inches long. Overall length is 4.8425 inches. The 2-flute, regular spiral flute design provides efficient chip evacuation. This bit is typically installed by machinists and tooling technicians in production drilling, fixture work, and CNC applications.

The 4150367 is suited for stub-length drilling applications where rigidity and minimal deflection are required. Its 3xD flute-to-diameter ratio and maximum drilling depth of 2.0079 inches make it appropriate for through-holes and blind holes in ferrous and non-ferrous metals. The DIN 6537K specification ensures dimensional consistency for use in CNC machining centers, drill presses, and similar equipment. Right-hand cutting direction is standard. Coolant-through capability is not available on this model.

Key Features

• Solid carbide construction for high rigidity and wear resistance in hard materials
• TiAlN (TiN tip) multilayer coating reduces friction and extends tool life at elevated temperatures
• 140-degree point angle improves self-centering and reduces thrust in metal drilling
• Stub/screw machine length (4.8425 inches OAL) provides greater rigidity versus jobber-length bits
• Straight-cylindrical shank (0.7087 inches diameter) for secure chuck or collet clamping
• Conforms to DIN 6537K specification for dimensional consistency

Compatibility

Designed as an OEM-style replacement or production tooling option for CNC machining centers, drill presses, and manual machines accepting a straight-cylindrical shank drill bit of 0.7087 inch shank diameter in the KENNAMETAL B041A-CPG series.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician. Ensure the machine spindle is fully stopped and locked out before inserting or removing the bit. Verify chuck or collet bore matches the 0.7087 inch shank diameter to prevent runout. Do not exceed the rated maximum drilling depth of 2.0079 inches without retracting to clear chips, as this bit does not feature coolant-through capability.