Hertel 16704850 Screw Machine Drill Bit No. 49 Solid Carbide

Product Description

The HERTEL 16704850 is a screw machine length drill bit ground from solid carbide and designed for high-performance drilling in hard and abrasive workpiece materials. It carries a No. 49 wire gauge size, which corresponds to a decimal diameter of 0.0730 inches. The 135-degree split-point geometry reduces walking on entry and requires less thrust than a conventional 118-degree point. With an overall length of 1-11/16 inches and a matching flute length, this is a stubby, rigid tool built for close-tolerance hole-making in production and maintenance environments. The bright, uncoated finish is standard for solid carbide tools used across a range of difficult materials.

This drill bit is suited for machining cast iron, nickel alloys, stainless steel, titanium alloys, and tool steel. Its short screw machine length provides maximum rigidity, making it a strong choice for CNC machining centers, drill presses, and manual machines where chatter and deflection must be minimized. The slow spiral flute design helps control chip evacuation in materials that produce short, brittle chips. It is typically selected by machinists, tool-and-die professionals, and maintenance technicians working in precision or high-production settings.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard materials
• No. 49 wire size, 0.0730 inch decimal diameter
• 135-degree point angle reduces thrust and improves self-centering on entry
• Slow spiral flute geometry suited to short-chipping materials such as cast iron and titanium alloy
• Bright, uncoated finish compatible with a wide range of cutting fluids and dry applications
• Straight-cylindrical shank fits standard drill chucks and collets

Compatibility

Designed as an OEM-style replacement or direct-use solid carbide drill bit for standard straight-shank drill chucks and collets accepting a 0.0730 inch shank diameter in machining and maintenance applications.

Installation Notes

Installation and use should be performed by qualified machinists or maintenance technicians familiar with carbide tooling. Secure the straight-cylindrical shank fully in a collet or drill chuck before operation, and verify runout is within acceptable limits, as carbide is brittle and sensitive to lateral loading. Always power down and lock out the machine before changing tooling. Avoid using carbide drills in hand-held drill applications where side loading is difficult to control.