Precision Twist Drill 5997825 Cobalt Jobber Drill Bit 74

Product Description

The PRECISION TWIST DRILL 5997825 is a cobalt jobber-length drill bit designed for drilling operations in ferrous and non-ferrous metals, hard alloys, and other demanding workpiece materials. Built to wire gauge size 74, it measures 0.0225 inches in diameter with a 1 inch overall length. The 135-degree split point promotes accurate self-centering and reduces walking on entry, making it well suited for production drilling where consistency matters. An oxide and straw finish provides a degree of lubricity and corrosion resistance. The bit features a standard straight cylindrical shank and two regular spiral flutes with a web-thinned, tapered web configuration for efficient chip evacuation. It meets ANSI and NAS 907 standards and is rated for heavy-duty general-purpose drilling by the manufacturer.

This bit is intended for use in hand-held or machine-mounted drilling applications where small-diameter precision holes are required. The cobalt construction makes it appropriate for cutting steel, stainless, cast iron, and similar hard materials that would rapidly dull a standard high-speed steel bit. Series R10CO-R15CO-R18CO. Typical users include machinists, tool and die technicians, aerospace maintenance technicians, and industrial MRO professionals working with close-tolerance hole requirements. The 1/4 inch maximum drilling depth and compact 1 inch overall length suit it for shallow-hole applications in tight clearance conditions.

Key Features

• Cobalt construction for improved heat resistance and tool life in hard and abrasive materials
• 135-degree split point for self-centering entry and reduced thrust force
• Web-thinned tapered web for efficient chip removal in small-diameter drilling
• Oxide and straw coating for light lubricity and surface protection
• Right-hand cutting direction with regular spiral flutes
• Meets ANSI and NAS 907 standards; rated heavy-duty general purpose

Compatibility

Designed as an OEM-style jobber drill bit in Series R10CO-R15CO-R18CO, suitable for use in standard straight-shank drill chucks and compatible with any spindle or hand tool accepting a 0.0225 inch straight shank. Primary workpiece material codes P, M, K, N, and S as designated by the manufacturer.

Installation Notes

This bit is installed and serviced by machinists, maintenance technicians, and industrial drilling professionals. Before mounting, ensure the drill chuck or collet is clean and free of debris to prevent runout at this small diameter. Secure the shank fully within the chuck jaws and verify concentricity before beginning a cut. At wire-gauge diameters, even minor misalignment or excessive feed pressure can cause bit breakage; follow the drill press or machine tool manufacturer's recommended feed and speed tables for cobalt bits in the target material.