Precision Twist Drill 046042 Cobalt Drill Bit 21/32 in Sml

Product Description

The PRECISION TWIST DRILL 046042 is a 21/32-inch cobalt drill bit built for demanding metal-cutting applications. The SML (Short Machine Length) body geometry keeps the bit rigid and reduces deflection when drilling in constrained spaces or on a drill press. The 135-degree split-point tip self-centers on contact, eliminating the need for a center punch and reducing walking on hard surfaces. A bronze oxide surface treatment improves lubricity and helps extend tool life in ferrous metals. This bit is a standard choice for machinists, pipefitters, HVAC fabricators, and electricians working with harder stock materials.

This drill bit is suited for use in ferrous metals, stainless steel, cast iron, and other hard alloys where standard high-speed steel bits would dull prematurely. The SML configuration makes it appropriate for drill press work, hand-held power drills, and magnetic base drills where a shorter overall length improves rigidity and control. It is sold individually and fits standard 3-jaw chucks compatible with 21/32-inch shank sizes.

Key Features

• 21/32-inch diameter for precision sizing in metal fabrication and mechanical work
• 135-degree split-point tip self-centers and reduces walking without a center punch
• Cobalt construction resists heat buildup during high-speed cutting in hard metals
• Bronze oxide surface treatment improves lubricity and extends cutting life
• SML (Short Machine Length) body maximizes rigidity and reduces deflection

Compatibility

Designed as an OEM-style replacement or direct-use cobalt drill bit compatible with standard 3-jaw drill chucks accepting a 21/32-inch shank, suitable for drill presses, hand-held power drills, and magnetic base drilling equipment.

Installation Notes

Installation and use should be performed by qualified machinists or trade professionals familiar with metal-cutting operations. Secure the workpiece firmly before drilling and ensure the bit is fully seated and tightened in the chuck before operation. Use appropriate cutting fluid when drilling stainless steel or other hard ferrous alloys to reduce heat and extend bit life. Always wear appropriate eye and hand protection during drilling operations.

Technical Specifications

• Diameter: 21/32 inches
• Point Angle: 135 degrees
• Length Type: SML (Short Machine Length)
• Material: Cobalt
• Surface Treatment: Bronze oxide
• Weight: 0.34 pounds
• Sold As: Each
• UPC: 086071460424

Standard Information

• Brand: PRECISION TWIST DRILL
• Manufacturer Part Number: 046042