Kennametal 4150732 Solid Carbide Jobber Drill 3/8 in

Product Description

The KENNAMETAL 4150732 is a solid carbide jobber-length drill bit designed for high-performance drilling in demanding metal-cutting applications. The 3/8 inch (0.3750 inch) diameter bit features a 140-degree split point that reduces walking and improves hole entry accuracy without a center punch. A multilayer TiAlN coating provides thermal resistance and extended tool life under high-speed cutting conditions. The whistle notch shank ensures secure seating in compatible chucks. This drill is intended for use by machinists and tooling professionals in production and job-shop environments.

The 4150732 is suited for drilling steel, stainless steel, cast iron, aluminum, and other non-ferrous materials. The right-hand spiral flute geometry promotes efficient chip evacuation, making it effective in both CNC machining centers and manual drill press setups. With a flute length of approximately 2.40 inches and an overall length of approximately 4.06 inches, this bit fits standard jobber-length toolholders and chucks. It is a strong choice for production drilling where tool life and hole quality are priorities.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard materials
• 140-degree point angle reduces thrust force and improves entry accuracy
• Multilayer TiAlN coating extends tool life in high-temperature cutting conditions
• Right-hand spiral flute for efficient chip removal
• Whistle notch shank prevents slippage in compatible toolholders
• No coolant-through design — suitable for external coolant or dry cutting applications

Compatibility

Designed as a high-performance OEM-style jobber drill for use in chucks and toolholders that accept a 3/8 inch whistle notch shank. Suitable for drilling steel, stainless steel, cast iron, aluminum, and non-ferrous materials.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or tooling technicians familiar with speeds, feeds, and chip-load requirements for solid carbide tooling. Secure the whistle notch shank fully in the chuck or toolholder before operation to prevent pullout. Do not use this bit in hammer-drill mode. Inspect the cutting edge for chipping before each use, and replace the bit at the first sign of edge wear to avoid workpiece damage or breakage.