Hertel 74148750 Screw Machine Drill Bit 3/32 in Carbide

Product Description

The HERTEL 74148750 is a solid carbide screw machine length drill bit designed for precision drilling in hard and abrasive materials. At 3/32 inch (0.0938 inches) in diameter with a 135-degree split point, it delivers fast penetration and reduced walking at startup. The web-thinned, parallel web configuration further lowers thrust requirements on entry. With an overall length of 1.75 inches and a flute length of 0.75 inches, this stub-length geometry provides added rigidity compared to jobber-length bits, making it well-suited for high-precision, close-tolerance drilling operations in a machine tool or drill press setup.

This drill bit is intended for use in machine tool environments including CNC machining centers, drill presses, and screw machines. It is engineered for cutting cast iron, nickel alloy, stainless steel, titanium alloy, and tool steel. The slow spiral flute design controls chip evacuation in these tough materials. The straight-cylindrical shank fits standard collets and drill chucks. Machinists, toolroom technicians, and precision fabricators working in metalworking and industrial manufacturing are the primary users.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard metals
• 135-degree split point reduces thrust and prevents bit walking on entry
• Web-thinned parallel web lowers cutting force requirements
• Slow spiral flute geometry optimized for chip control in cast iron, stainless steel, titanium alloy, nickel alloy, and tool steel
• Screw machine (stub) length provides enhanced rigidity over standard jobber-length bits
• Bright/uncoated finish suitable for use with cutting fluids where coatings may not be required

Compatibility

Designed as an OEM-style replacement or direct-use screw machine length drill bit for precision metalworking applications requiring a 3/32 inch solid carbide stub drill with a straight-cylindrical shank.

Installation Notes

Installation and use should be performed by qualified machinists or toolroom personnel familiar with machine tool operation. Ensure the machine spindle is fully stopped and locked out before changing or securing the bit in the chuck or collet. Verify the straight-cylindrical shank is seated and clamped evenly to prevent runout. Follow applicable shop safety procedures and manufacturer feed-and-speed guidelines for the specific workpiece material being drilled.