Precision Twist Drill 010315 Hss Cobalt Jobber Drill Bit

Product Description

The PRECISION TWIST DRILL 010315 is a high-speed steel (HSS) cobalt jobber-length drill bit built for heavy-duty drilling in hard and abrasive materials. Featuring a 15/64 inch diameter tip and a 4 inch depth of cut, this bit is engineered for demanding applications where standard HSS tooling falls short. The cobalt alloy construction provides elevated heat resistance and edge retention, allowing the bit to maintain cutting performance under high-friction conditions. It carries a straight shank design and is classified as a Type J jobber drill. Licensed tradespeople and industrial machinists rely on this bit where material hardness would quickly wear out conventional drill bits.

This drill bit is suited for use on hard metals including stainless steel, cast iron, hardened alloys, and other tough ferrous and non-ferrous surfaces. It is appropriate for both production shop environments and field service applications where a reliable, heavy-duty jobber-length bit is needed. The 15/64 inch diameter makes it a common choice for clearance holes, pilot holes, and through-hole drilling in structural and fabricated metal components.

Key Features

• HSS cobalt alloy construction for superior heat resistance and edge retention in hard materials
• 15/64 inch diameter tip for precision sizing in metal drilling applications
• 4 inch depth of cut handles standard jobber-length drilling tasks
• Straight shank (Type J) fits standard 3-jaw drill chucks without adapters
• Heavy-duty build rated for continuous use on hard and abrasive surfaces

Compatibility

Designed as an OEM-style jobber-length drill bit compatible with standard 3-jaw drill chucks and drill presses that accept straight shank tooling in the 15/64 inch diameter range.

Installation Notes

Install in a properly rated drill press, hand drill, or CNC spindle with a chuck rated for the bit shank diameter. Secure the shank fully in the chuck before operation and confirm runout is within acceptable tolerance for the application. Use appropriate cutting fluid or coolant when drilling hard metals to extend bit life and prevent overheating. Follow applicable OSHA and shop safety standards when operating rotating tooling.

Technical Specifications

• Diameter: 15/64 inches
• Depth of Cut: 4 inches
• Overall Length: 3-7/8 inches
• Material: HSS Cobalt
• Shank Type: Straight (Type J)
• Drill Style: Jobber Length
• Weight: 0.45 pounds
• UPC: 086071103154

Standard Information

• Brand: PRECISION TWIST DRILL
• Manufacturer Part Number: 010315