Precision Twist Drill 091546 Hss Silver Deming Jobber Drill

Product Description

The PRECISION TWIST DRILL 091546 is a high-speed steel (HSS) Silver Deming jobber-length drill bit with a 1/2 inch reduced parallel shank, designed for drilling operations that require a larger cutting diameter than a standard chuck can accept directly. The cutting diameter is 23/32 inches with a depth of cut reaching 4 inches. The 3-flute geometry improves chip evacuation and provides high resistance to abrasion, extending tool life in demanding materials. This bit is suited for machinists, pipefitters, ironworkers, and maintenance tradespeople who need reliable performance in metal drilling applications.

Silver Deming-style bits with reduced shanks are a staple in trade and industrial settings where standard drill presses and portable electric drills with 1/2 inch chucks are used. The 23/32 inch diameter makes this bit practical for bolt clearance holes, conduit knockouts, and similar large-diameter through-holes in ferrous and non-ferrous metals. The jobber length profile keeps the tool rigid while still providing adequate reach for most standard workpiece thicknesses.

Key Features

• HSS construction provides high abrasion resistance for extended tool life in metal drilling
• 23/32 inch cutting diameter with 4 inch depth of cut
• 1/2 inch reduced parallel shank fits standard 1/2 inch drill press and hand drill chucks
• 3-flute design promotes efficient chip clearing during drilling
• Jobber length profile maintains rigidity and control

Compatibility

Designed for use in any drill press or hand drill equipped with a standard 1/2 inch chuck, making it a general-purpose replacement or addition for trade and industrial drilling applications.

Installation Notes

This drill bit is installed and operated by machinists, maintenance technicians, pipefitters, and general tradespeople. Always secure the workpiece firmly before drilling and ensure the drill chuck is fully tightened on the reduced shank before operation. Use appropriate cutting fluid when drilling ferrous metals to reduce heat buildup and prolong bit life. Inspect the cutting edges for wear or chipping before each use and replace the bit if damage is found.

Technical Specifications

• Cutting Diameter: 23/32 inches
• Depth of Cut: 4 inches
• Overall Length: 6 inches
• Shank Type: 1/2 inch reduced parallel shank
• Number of Flutes: 3
• Material: High-Speed Steel (HSS)
• Weight: 0.4 pounds
• UPC: 086071915467

Standard Information

• Brand: PRECISION TWIST DRILL
• Manufacturer Part Number: 091546