Hertel 74132143 Size 17 Cobalt Drill Bit Tialn 135 Deg

Product Description

The HERTEL 74132143 is a screw machine length drill bit designed for high-speed, short-reach drilling in metal fabrication, machining, and maintenance applications. Built from cobalt high-speed steel with a titanium aluminum nitride (TiAlN) coating, this bit handles hard materials and elevated cutting temperatures that would degrade standard HSS tooling. It features a 135-degree split point for fast penetration and reduced walking on entry. The straight-cylindrical shank seats securely in standard drill chucks and machine spindles. Overall length is 2-3/16 inches, keeping it rigid and reducing deflection in close-clearance setups. Machinists, tool and die techs, and maintenance mechanics are the primary users.

This drill bit is suited for production drilling and repair work in metal shops, maintenance facilities, and manufacturing environments. The screw machine length profile - shorter than jobber length - improves rigidity and accuracy in drill press, turret lathe, and CNC machine applications. The size 17 wire gauge diameter of 0.1730 inches falls within the 0.1500 to 0.2000 inch range, making it useful for tapping prep, clearance holes, and precision through-holes in steel, stainless, cast iron, and other ferrous materials where cobalt tooling is appropriate.

Key Features

• Cobalt high-speed steel construction for heat and wear resistance in hard-material drilling
• TiAlN coating extends tool life and reduces friction at elevated cutting speeds
• 135-degree split point reduces thrust force and self-centers on entry without a center punch
• Web-thinned, parallel web configuration improves chip evacuation and reduces heat buildup
• Screw machine length body at 2-3/16 inches OAL provides extra rigidity over jobber-length bits
• Right-hand spiral flute for standard clockwise rotation in conventional drilling setups

Compatibility

Designed as an OEM-style replacement or direct-use screw machine drill bit for any drill press, turret lathe, or CNC spindle accepting a straight-cylindrical shank in the 0.1730-inch diameter class.

Installation Notes

Installation and use should be performed by qualified machinists or maintenance mechanics familiar with metalworking tooling. Power down and de-energize the machine before changing or seating the bit in the chuck. Confirm shank seating and chuck tightness before initiating a cut. Do not exceed the recommended speed and feed for the workpiece material and bit diameter.