Precision Twist Drill 015018 Hss Jobber Drill Bit

Product Description

The PRECISION TWIST DRILL 015018 is a high-speed steel (HSS) jobber-series drill bit designed for drilling into hard materials across a wide range of trade and industrial applications. With a tip diameter of 0.3390 inches and a depth of cut reaching 4 inches, this bit handles through-hole work in steel, cast iron, hard plastics, and similar materials where heat resistance and edge retention are critical. The HSS construction allows the cutting edge to maintain hardness at elevated temperatures generated during aggressive drilling, reducing the risk of premature dulling. Electricians, plumbers, pipefitters, HVAC installers, and general contractors will find this bit a dependable tool for structural and panel penetrations.

This jobber-length drill bit is suited for both stationary drill press use and handheld power drill applications. Its 4-inch depth of cut makes it practical for penetrating structural members, metal framing, junction box knockouts, pipe hangers, and similar trade installations. The 0.3390-inch diameter corresponds to a common fractional and letter-gauge range used in mechanical and electrical rough-in work. It is sold individually and is appropriate for shop stock or field kit use.

Key Features

• High-speed steel (HSS) construction resists heat buildup during hard-material drilling
• 0.3390 inch tip diameter suits common trade drilling and fastener clearance applications
• 4 inch depth of cut allows through-penetration of structural members and heavy-gauge materials
• Jobber-series length provides a balanced combination of reach and rigidity
• Compatible with standard 3-jaw drill chucks on handheld drills and drill presses

Compatibility

Designed as an OEM-style jobber drill bit for use in standard 3-jaw drill chucks accommodating the 0.3390 inch shank diameter, compatible with most handheld power drills and benchtop or floor-standing drill presses used in trade and light industrial settings.

Installation Notes

This bit should be installed and secured in a properly rated drill chuck before use. Always ensure the workpiece is clamped or otherwise secured before drilling to prevent rotation or kickback. Use cutting fluid or coolant when drilling ferrous metals to extend bit life and reduce heat buildup. Follow applicable OSHA and jobsite safety requirements for rotating tool operation, including appropriate eye protection.

Technical Specifications

• Tip Diameter: 0.3390 inches
• Depth of Cut: 4 inches
• Overall Length: 4.75 inches
• Material: High-Speed Steel (HSS)
• Series: Jobber
• Weight: 0.55 pounds
• Sold As: Pack (Min Qty: 1)

Standard Information

• Brand: PRECISION TWIST DRILL
• Manufacturer Part Number: 015018