Eagle Cutting Tool SC400-029-D Cobalt Stub Drill 29/64 in

Product Description

The EAGLE CUTTING TOOL SC400-029-D is a cobalt stub-length drill bit ground to a 135-degree split-point tip. Stub-length drills — also called screw-machine length drills — have a shorter flute and overall length than jobber-length bits, which increases rigidity and reduces deflection when starting a hole. The cobalt construction improves heat and wear resistance, making this bit suitable for harder ferrous metals, stainless steel, and high-alloy materials where standard HSS bits would dull prematurely. Machinists, pipefitters, and maintenance technicians reach for this style when working in drill presses, turret lathes, or CNC setups where a stiffer cutting tool is needed.

This bit is sized at 29/64 inch and is intended for metal fabrication, pipe and structural steel drilling, and maintenance-repair applications in industrial and commercial environments. The 135-degree split-point geometry reduces the thrust force required to start a cut, allowing the tip to self-center without a center punch on most metal surfaces. Typical users include machine shops, plumbing and pipefitting contractors, ironworkers, and plant maintenance crews drilling through steel plate, angle iron, or pipe wall.

Key Features

• Cobalt construction provides superior heat resistance for drilling hard and abrasive metals
• 135-degree split-point tip self-centers on contact, reducing the need for a center punch
• Stub-length body increases rigidity and minimizes deflection compared to jobber-length drills
• 29/64 inch cutting diameter suits a wide range of bolt clearance and pipe-fitting applications
• Designed for use in drill presses, lathes, and CNC equipment as well as heavy-duty hand drilling

Compatibility

Designed as a standard stub-length cobalt drill bit compatible with any 3/8-inch or 1/2-inch chuck drill press, hand drill, or machine tool spindle accepting round-shank bits of this diameter.

Installation Notes

Secure the bit firmly in the chuck and verify runout before beginning a cut. Use cutting fluid or cutting oil when drilling ferrous metals to extend bit life and manage heat buildup. Avoid excessive feed pressure, which can overheat the tip and reduce the temper of the cobalt steel. Cutting operations on powered equipment should comply with applicable OSHA machine-guarding and PPE requirements.

Technical Specifications

• Cutting Diameter: 29/64 inch
• Point Angle: 135 degrees
• Point Type: Split Point
• Length Style: Stub (Screw-Machine Length)
• Material: Cobalt High-Speed Steel
• Weight: 0.95 pounds

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: SC400-029-D