Precision Twist Drill 015020 Hss Jobber Drill Bit

Product Description

The PRECISION TWIST DRILL 015020 is a high-speed steel (HSS) jobber-series drill bit engineered for drilling into hard materials in demanding trade applications. With a tip diameter of 0.3580 inches and a depth of cut of 4 inches, this bit is sized for deep-hole work where standard-length bits fall short. The HSS construction resists heat buildup and edge wear during high-friction cuts, maintaining point geometry longer than standard carbon-steel bits. Electricians, pipefitters, HVAC installers, and general construction trades use jobber-series bits like this one as a reliable workhorse for structural steel, cast iron, and hard alloys.

This bit is suited for use in stationary drill presses and handheld power drills in both residential and commercial job-site conditions. The 4-inch depth of cut makes it appropriate for penetrating thick structural members, steel plates, or stacked material assemblies. The 0.3580-inch diameter corresponds to a standard wire-gauge or fractional equivalent commonly called out in mechanical and electrical rough-in specifications. Overall length is 4-7/8 inches.

Key Features

• High-speed steel (HSS) construction resists heat and wear on hard surfaces
• 0.3580 inch tip diameter for precise, consistent hole sizing
• 4 inch depth of cut for deep-hole drilling applications
• 4-7/8 inch overall length for jobber-series reach
• Jobber-series geometry balances rigidity and cutting speed

Compatibility

Designed as a standard jobber-series HSS drill bit compatible with 3-jaw drill chucks accepting round shanks in handheld drills and benchtop or floor-standing drill presses.

Installation Notes

Installation of this bit requires securing it firmly in a properly sized chuck before operation. Always power down and de-energize or unplug the drill before changing bits. Use appropriate cutting fluid or lubricant when drilling ferrous metals to extend bit life and reduce heat buildup. Follow applicable OSHA and tool-manufacturer guidelines for personal protective equipment when operating rotary cutting tools.

Technical Specifications

• Series: HSS Jobber
• Tip Diameter: 0.3580 inches
• Depth of Cut: 4 inches
• Overall Length: 4-7/8 inches
• Material: High-Speed Steel (HSS)
• Weight: 0.6 pounds

Standard Information

• Brand: PRECISION TWIST DRILL
• Manufacturer Part Number: 015020