Precision Twist Drill 5999067 No. 43 Hss Jobber Drill Bit

Product Description

The PRECISION TWIST DRILL 5999067 is a jobber-length drill bit sized to wire gauge No. 43, with a decimal diameter of 0.0890 inches. It is manufactured from high speed steel (HSS) with a bright, uncoated finish and features a standard 118-degree point angle. The two-flute, regular-spiral design provides efficient chip evacuation during through-hole and blind-hole drilling operations. Overall length is 2.25 inches, with a 1.25-inch flute length and a straight-cylindrical shank. This bit belongs to Precision Twist Drill Series R18P and is suited for general-purpose drilling by machinists, maintenance technicians, and metalworking trades.

This drill bit is rated for use in steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium, covering ISO material codes P, M, K, N, and S. It is well suited for light-duty production drilling, toolroom work, and field maintenance tasks where a small-diameter HSS bit is required. The web-thinned, tapered web construction reduces entry force in harder workpiece materials. No coolant-through capability is present, making it appropriate for dry drilling or flood coolant applied externally at the cutting zone.

Key Features

• Wire gauge No. 43 size, 0.0890 inches decimal diameter
• High speed steel construction with bright uncoated finish
• 118-degree standard point angle with web-thinned tapered web
• 2-flute regular spiral for reliable chip removal
• Straight-cylindrical shank, 0.0890 inches diameter, 1 inch shank length
• Rated for steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium
• Meets ANSI specification standards

Compatibility

Part of the Precision Twist Drill R10P-R15P-R18P series. Designed as a general-purpose jobber-length replacement drill bit for standard three-jaw drill chucks and collet systems accepting a 0.0890-inch straight-cylindrical shank.

Installation Notes

Install and remove this bit only after the drill press, hand drill, or milling machine spindle is fully de-energized and at rest. Secure the straight-cylindrical shank firmly in the chuck or collet before operation to prevent runout that can snap small-diameter bits. Follow applicable shop safety practices and ANSI B11 machine tool standards for drilling operations. Do not exceed the rated maximum drilling depth of 1.25 inches without retracting to clear chips.