Hertel 74130931 Drill Bit Size 41 Cobalt 135 Deg

Product Description

The HERTEL 74130931 is a screw machine length drill bit designed for high-speed, close-tolerance drilling in metal fabrication and machining applications. Built from cobalt high-speed steel (HSCO), the bit handles harder workpiece materials and elevated cutting temperatures better than standard M2 HSS tooling. It features a 135-degree split point that reduces walking and cutting thrust, and a web-thinned, parallel-web configuration that aids chip evacuation. At 1-13/16 inches overall length with a 13/16-inch flute, the stubby screw machine length profile provides rigidity in short-reach drilling setups, making it well suited for drill press, CNC, and turret lathe work.

This bit is sized to wire gauge 41, which corresponds to 0.0960 inches in decimal. The regular spiral flute geometry and right-hand cutting direction are standard for general metalworking operations. The straw finish indicates the cobalt content and heat treatment applied during manufacture. Machinists, tool-and-die workers, and maintenance technicians use this bit for tapping pilot holes, through-hole production drilling, and repeat-cycle operations where rigidity and point stability matter more than reach.

Key Features

• Cobalt HSS construction for improved heat and wear resistance in hard-material drilling
• 135-degree split point reduces thrust force and eliminates center-punch requirements on most metals
• Web-thinned parallel web improves chip clearance and reduces cutting resistance
• Screw machine length (1-13/16 inches OAL) provides added rigidity versus jobber-length bits
• Regular spiral flute with right-hand cut suits standard metalworking setups
• Straight cylindrical shank fits standard drill chucks without adapters

Compatibility

Designed as an OEM-style replacement or production consumable for use in drill presses, CNC machining centers, turret lathes, and hand-held drill motors equipped with standard straight-shank chucks accepting wire gauge tooling in the 0.0960-inch range.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or maintenance technicians familiar with cutting tool setup. Secure the straight shank firmly in the chuck and verify runout before production use. Always set appropriate spindle speed and feed rate for the workpiece material and bit diameter. Inspect the cutting edge for wear or chipping at regular intervals and replace when point geometry degrades to avoid workpiece damage or bit breakage.