Hertel 84024116 Cobalt Drill Bit 7/32 in 135 Split Point

Product Description

The HERTEL 84024116 is a short-series cobalt drill bit with a threaded 1/4-28 square shank, designed for drilling into high-tensile strength metals. The 135-degree split point geometry reduces walking at entry and requires no center punch on most materials. An oxide coating adds surface hardness and helps shed heat generated during aggressive drilling cycles. At 1.25 inches overall length with a 9/16-inch spiral flute, this bit is built for confined-space drilling applications where a standard-length bit will not fit. Right-hand cutting with a regular spiral and tapered web configuration. Meets NAS 965 Type D specification. Weight is 0.15 pounds.

This bit is suited for use in aviation, HVAC, plumbing, and general mechanical trade applications where high-tensile alloys, stainless, or hardened steel must be drilled cleanly and accurately. The short overall length and threaded shank make it a direct fit for dedicated threaded-shank drill drivers and right-angle attachments common in tight-access installations. General-purpose grade makes it appropriate for production drilling or field service work where bit replacement is routine.

Key Features

• Cobalt construction with oxide coating for heat resistance in hard-metal drilling
• 135-degree split point reduces thrust and eliminates walking without a center punch
• Short-series OAL of 1.25 inches for confined-space access
• 1/4-28 threaded square shank for use with compatible threaded-shank drivers
• Right-hand cut with regular spiral flute and tapered web for chip clearance
• Meets NAS 965 Type D specification

Compatibility

Designed for use with threaded-shank drill drivers accepting a 1/4-28 shank. Rated for high-tensile strength metal applications per NAS 965 Type D.

Installation Notes

This bit is installed by trade mechanics, HVAC technicians, plumbers, and electricians using dedicated threaded-shank drill systems. Ensure the driver chuck is fully engaged with the 1/4-28 thread before operation. Use appropriate cutting fluid when drilling stainless or hardened alloys to extend bit life and control heat. Always wear eye protection and secure the workpiece before drilling.