Precision Twist Drill 010311 Hss Cobalt Jobber Drill 11/64 in

Product Description

The PRECISION TWIST DRILL 010311 is a heavy-duty HSS cobalt jobber drill designed for drilling into hard surfaces where standard high-speed steel bits fall short. Built with a straight shank and Type J jobber geometry, this drill delivers controlled cutting performance in demanding trade applications. It measures 11/64 inches in tip diameter and 3.25 inches in overall length, with a depth of cut reaching 4 inches. Weighing 0.2 pounds, it is lightweight and easy to handle during repeated use. Licensed tradespeople working with hard ferrous metals, stainless, or hardened alloys will find this a dependable line-stock bit.

This jobber drill fits standard drill chucks accepting straight-shank bits and is suited for use in hand drills, drill presses, and magnetic base drill setups. It is appropriate for residential, commercial, and industrial jobsite applications where hard-material penetration is required. The cobalt content in the HSS matrix raises heat resistance, making this bit effective in continuous or high-feed drilling scenarios where standard HSS bits lose temper and degrade prematurely. HVAC technicians, pipefitters, electricians, and general contractors will find it well-suited for tough metal drilling tasks encountered in the field.

Key Features

• HSS cobalt construction for superior heat resistance in hard-surface drilling
• Type J straight-shank jobber design fits standard drill chucks without adapters
• 11/64 inch tip diameter for precision hole sizing in tight-tolerance applications
• 4 inch depth of cut supports through-hole drilling in thicker stock
• Heavy-duty classification for repeated use in demanding trade environments

Compatibility

Designed as an OEM-style jobber drill suitable for use in standard straight-shank drill chucks across hand drills, drill presses, and magnetic base drilling equipment.

Installation Notes

Installation and use of this drill bit should be performed by qualified tradespeople familiar with rotating tool safety. Always secure the workpiece before drilling and ensure the chuck is fully tightened before operation. Use appropriate cutting fluid or lubricant when drilling hard alloys to extend bit life and reduce heat buildup. Inspect the cutting edges for wear before each use and replace the bit if chipping or dulling is observed.

Technical Specifications

• Tip Diameter: 11/64 inches
• Overall Length: 3.25 inches
• Depth of Cut: 4 inches
• Shank Type: Straight
• Drill Type: Type J Jobber
• Material: HSS Cobalt
• Weight: 0.2 pounds
• UPC: 086071103116

Standard Information

• Brand: PRECISION TWIST DRILL
• Manufacturer Part Number: 010311