Hertel 74130212 Cobalt Screw Machine Drill Bit 5/32 in

Product Description

The HERTEL 74130212 is a cobalt screw machine length drill bit designed for demanding drilling applications in metal, stainless steel, and other hard materials. Built from high-speed cobalt steel, this bit delivers heat resistance and edge retention that standard HSS bits cannot match. The 135-degree split point geometry reduces walking and allows the bit to self-center without a pilot hole. The web-thinned parallel web configuration reduces thrust and improves chip evacuation. At 2-1/16 inches overall length and 5/32 inch diameter, this is a stub-length format suited to short-reach and high-production drilling work. Installed by machinists, maintenance technicians, and metalworking professionals.

This bit is used in screw machine operations, CNC drilling, manual drill press work, and hand-held drill motor applications where a rigid, short-flute geometry is preferred. The straight cylindrical shank fits standard drill chucks across a wide range of benchtop and floor-standing drill presses. The 5/32 inch diameter falls within the 0.1500 to 0.2000 decimal inch size range, making it a common selection for clearance holes, pilot work, and light production drilling in ferrous and non-ferrous metals.

Key Features

• Cobalt steel construction for elevated heat resistance and extended tool life in hard metals
• 135-degree split point reduces walking and eliminates the need for center-punching on most materials
• Web-thinned parallel web lowers drilling thrust and improves chip flow
• Screw machine length body provides rigidity and reduced deflection in short-reach applications
• Right-hand cut with regular spiral flute geometry for standard drilling operations
• Straight cylindrical shank fits standard 3-jaw drill chucks without adapters

Compatibility

Designed for use in standard drill chucks accepting straight cylindrical shanks; fits drill presses, screw machines, and hand-held drill motors sized for 5/32 inch diameter bits in the HSCO135 series.

Installation Notes

Install and remove this bit only with the drill motor fully powered down and the chuck key removed from the work area before startup. Secure the workpiece in a vise or fixture before drilling to prevent rotation and injury. For extended tool life in hard alloys, use a compatible cutting fluid and avoid excessive feed pressure that can overheat the cutting edge. Inspect the split point for chipping or wear before each use.