Precision Twist Drill 091538 Hss Silver Deming Drill Bit

Product Description

The PRECISION TWIST DRILL 091538 is a high-speed steel (HSS) Silver Deming reduced-shank jobber drill bit designed for demanding metal drilling applications. Built with a 19/32-inch tip diameter and an overall length of 6 inches with a 4-inch depth of cut, this bit features a 1/2-inch reduced parallel shank that fits standard 1/2-inch chuck capacity drills. The three-flute construction promotes efficient chip evacuation and is engineered for high resistance to abrasion, extending service life in repetitive production or field drilling tasks. Licensed electricians, HVAC technicians, pipefitters, and general trade professionals reach for Silver Deming bits when boring larger-diameter holes through ferrous and non-ferrous metals.

This drill bit is suited for jobber-length drilling tasks where a standard chuck size must accommodate a larger cutting diameter. The 1/2-inch reduced shank allows the 19/32-inch cutter to be used in any drill press or handheld drill with a standard 1/2-inch chuck. Typical applications include drilling pilot and clearance holes through structural steel, pipe, conduit strut, panel enclosures, and similar metalwork encountered in mechanical, electrical, and plumbing trades. The 4-inch depth of cut handles most standard material thicknesses and stack drilling scenarios encountered on the job site or in a shop setting.

Key Features

• 19/32-inch cutting diameter with 1/2-inch reduced parallel shank for standard chuck compatibility
• High-speed steel (HSS) construction for hardness and heat resistance during metal drilling
• Three-flute geometry promotes chip clearing and reduces heat buildup at the cutting edge
• 4-inch depth of cut suitable for structural and panel metalwork applications
• Engineered for high abrasion resistance to maintain edge integrity through repeated use
• Jobber length format for versatile use in drill presses and portable handheld drills

Compatibility

Designed for use in any drill press or handheld drill equipped with a standard 1/2-inch chuck capacity, making it a versatile fit for common trade drilling equipment.

Installation Notes

This bit is installed and operated by trade professionals including electricians, pipefitters, and HVAC technicians performing metal drilling tasks. Secure the 1/2-inch reduced shank firmly in the chuck before operation and verify chuck tightness with all three key positions. Always wear appropriate eye protection and secure the workpiece before drilling. Operate at a speed appropriate for the material thickness and diameter to prevent overheating the cutting edge.

Technical Specifications

• Tip Diameter: 19/32 inches
• Shank Diameter: 1/2 inch (reduced parallel)
• Overall Length: 6 inches
• Depth of Cut: 4 inches
• Flute Count: 3
• Material: High-Speed Steel (HSS)
• Style: Silver Deming Jobber
• Weight: 0.3 pounds
• UPC: 086071915382

Standard Information

• Brand: PRECISION TWIST DRILL
• Manufacturer Part Number: 091538