Hertel 74148784 Carbide Screw Machine Drill Bit 0.1181 in

Product Description

The HERTEL 74148784 is a solid carbide screw machine length drill bit designed for high-performance drilling in demanding materials. With a diameter of 0.1181 inches (3.00 mm) and an overall length of 1-7/8 inches, this bit is built for precision work in tight-tolerance applications. The 135-degree split point reduces walking at entry and lowers thrust requirements. Solid carbide construction in C2 material grade delivers the rigidity and wear resistance needed when cutting hard or abrasive workpiece materials. This bit is used by machinists and tool-and-die professionals who require consistent, repeatable results in production environments.

This drill bit is suited for drilling cast iron, nickel alloy, stainless steel, titanium alloy, and tool steel. Screw machine length geometry provides a shorter, stiffer profile compared to jobber length bits, making it a preferred choice for CNC machining centers, turret lathes, and screw machines where rigidity and hole accuracy are critical. The bright/uncoated finish is compatible with a range of cutting fluids and coolant strategies where through-coolant is not required.

Key Features

• Solid carbide C2 grade construction for durability in hard and abrasive materials
• 135-degree split point with web thinning reduces entry force and improves hole accuracy
• Slow spiral flute design optimized for chip evacuation in tough alloys
• Straight-cylindrical shank fits standard drill chucks and collet systems
• Screw machine length (1-7/8 inches overall) provides maximum rigidity in short-reach applications
• Bright/uncoated finish - compatible with water-soluble and oil-based cutting fluids

Compatibility

Designed as an OEM-style replacement or direct-use screw machine drill bit for CNC machining, turret, and automatic screw machine setups requiring a 3.00 mm (0.1181 inch) diameter straight-shank carbide bit.

Installation Notes

Installation and use should be performed by qualified machinists familiar with proper toolholding practices. Ensure the drill chuck or collet is clean and properly torqued before operation. Solid carbide bits are brittle - avoid side loading, interrupted cuts without appropriate feed reduction, or dropping the bit on hard surfaces. Always follow machine manufacturer feed and speed recommendations for the workpiece material being drilled.