Precision Twist Drill 5999696 Jobber Drill 10mm Cobalt

Product Description

The PRECISION TWIST DRILL 5999696 is a 10.00 mm cobalt high-speed steel jobber-length drill bit designed for general-purpose drilling in steel and other demanding workpiece materials. The bit features a 135-degree split point angle with web thinning for fast penetration and reduced walking on entry. An oxide and straw finish provides mild lubricity and heat resistance during cutting. With a regular spiral flute and straight cylindrical shank, this bit fits standard drill chucks and is sized to run in most benchtop, handheld, and machine-tool setups. It is intended for use by machinists, millwrights, pipefitters, and maintenance technicians working with ferrous and non-ferrous metals.

This drill bit is suited for production and maintenance drilling in steel, cast iron, aluminum, and non-ferrous alloys, covering workpiece material codes P, M, K, N, and S per DIN classification. The 9xD flute-to-diameter ratio provides adequate chip clearance for through-hole and blind-hole applications at standard drilling depths. The straight shank accepts all standard drill chucks without adapters, making it practical for portable drill use as well as drill press and CNC applications where a collet or keyed chuck is used.

Key Features

• Cobalt high-speed steel construction for elevated heat resistance in steel drilling
• 135-degree web-thinned point reduces thrust and prevents bit walking at entry
• Oxide and straw finish for added lubricity and corrosion resistance
• Regular spiral flute with tapered web configuration for efficient chip evacuation
• Straight cylindrical shank with zero flats fits standard drill chucks directly
• Meets ANSI and DIN 338 standards for jobber-length drill geometry

Compatibility

Designed as a general-purpose jobber drill for use in steel and mixed-metal drilling applications where a 10.00 mm straight-shank bit conforming to DIN 338 geometry is specified.

Installation Notes

Installation and use of this drill bit should be performed by a qualified machinist or trained tradesperson. Ensure the drill chuck or collet is fully tightened and the workpiece is securely clamped before operation. Use cutting fluid or coolant appropriate to the workpiece material when drilling steel to extend tool life and reduce heat buildup. Inspect the cutting edges before each use and do not operate a visibly chipped or cracked bit.