Precision Twist Drill 5996076 Cobalt Drill Bit 0.1015 in

Product Description

The PRECISION TWIST DRILL 5996076 is a screw machine length cobalt drill bit designed for high-performance drilling in hard and difficult-to-machine materials. Built to Series M41CO standards, this bit measures 0.1015 inches in diameter (Wire Size 38) with an overall length of 1-13/16 inches and a flute length of 13/16 inches. The 135-degree split point reduces walking and lowers the thrust required to start a hole. The straight-cylindrical shank fits standard drill chucks without modification. At 0.04167 pounds, it is a compact, precision-ground tool suitable for production environments and maintenance shop use alike.

This bit is suited for drilling hard materials in screw machine operations, production machining, and close-tolerance fabrication work. The screw machine length format provides added rigidity over jobber-length bits, making it well matched for short, accurate holes in ferrous metals, stainless steel, and other high-hardness workpiece materials. It is a single-piece unit sold individually with a minimum order quantity of 12. HVAC fabricators, pipefitters, and industrial maintenance technicians commonly use screw machine bits of this type when drilling through structural steel, heat exchanger tubing, and similar hard materials.

Key Features

• Cobalt (M41 grade) construction for heat resistance and wear life in hard materials
• 135-degree split point reduces thrust and prevents bit walking on entry
• Web-thinned, tapered web configuration improves chip evacuation
• Screw machine length body adds rigidity and accuracy over jobber-length alternatives
• Regular spiral flute with 2.5xD flute-to-diameter ratio balances chip clearance and core strength
• Right-hand cut, straight-cylindrical shank fits standard chucks without adapters

Compatibility

Designed as an OEM-style replacement or direct-use screw machine drill bit for applications requiring a 0.1015-inch diameter cobalt bit conforming to ANSI standards in Series M41CO.

Installation Notes

Installation is performed by machinists, maintenance technicians, or trade professionals using a standard drill press, CNC machine, or hand drill with a compatible chuck. Secure the straight-cylindrical shank firmly in the chuck before use. Use appropriate cutting fluid or coolant when drilling hard or stainless materials to extend tool life, noting that this bit does not support coolant-through delivery. Follow applicable shop safety protocols and ANSI standards when operating rotating cutting tools.