Precision Twist Drill 010312 Hss Cobalt Jobber Drill 3/16 in

Product Description

The PRECISION TWIST DRILL 010312 is a heavy-duty HSS cobalt jobber-length drill bit engineered for cutting through hard surfaces where standard high-speed steel falls short. The cobalt alloy construction delivers improved heat resistance and edge retention, making it a practical choice for ferrous metals, stainless steel, and other tough materials. With a 3/16-inch tip diameter and a 4-inch depth of cut, this straight-shank bit is suited to production drilling and maintenance applications that demand consistent performance under load. It ships as a single unit and is the type of tooling favored by machinists and trade professionals working on metal fabrication or mechanical assembly tasks.

This drill bit is designed for use in standard drill presses, magnetic drills, or heavy-duty hand drills equipped with a keyed or keyless chuck accepting straight-shank bits. The 3/16-inch diameter and 4-inch depth of cut make it appropriate for through-hole and deep-hole work in hard metals encountered in industrial maintenance, mechanical contracting, and fabrication shops. It is sold individually, allowing technicians to stock specific sizes without purchasing a full index set.

Key Features

• HSS cobalt construction provides superior heat resistance and extended tool life in hard materials
• Heavy-duty straight shank fits standard drill chucks without adapters
• Type J jobber-length geometry balances reach and rigidity for general-purpose deep drilling
• 3/16-inch diameter with 4-inch depth of cut handles a wide range of through-hole and blind-hole applications
• Single-unit packaging allows precise inventory control for specific drill sizes

Compatibility

Designed as a jobber-length straight-shank drill bit compatible with standard keyed and keyless drill chucks accepting 3/16-inch shank tooling in drill presses and portable drilling equipment.

Installation Notes

Installation of this drill bit is performed by machinists or qualified trade professionals. Secure the straight shank firmly in the chuck and verify concentricity before beginning a cut. Always use appropriate cutting fluid or coolant when drilling hard metals to protect the cutting edge and reduce heat buildup. Follow applicable shop safety practices and wear proper personal protective equipment when operating drilling equipment.

Technical Specifications

• Tip Diameter: 3/16 inches
• Depth of Cut: 4 inches
• Overall Length: 3.5 inches
• Shank Type: Straight
• Drill Type: Type J Jobber
• Material: HSS Cobalt
• Weight: 0.25 pounds
• UPC: 086071103123

Standard Information

• Brand: PRECISION TWIST DRILL
• Manufacturer Part Number: 010312