Predator Cobalt #1-#60 Number Jobber Drill Bit Set

Predator™ M42 Cobalt Jobber Drill Bit Set – #1–#60 Wire Gauge

135° Split Point | M42 Cobalt | Steel Index | Made in USA

Predator Cobalt Jobber Drill Bits are built for serious metal drilling where standard HSS bits come up short. This complete #1 through #60 M42 cobalt drill bit set is engineered for precision, durability, and consistent performance in hard materials. Number drills are also called wire gauge drill bits, and this 60-piece wire gauge drill bit set covers every number size from #60 (.0400″) to #1 (.2280″) in jobber length.

Manufactured from premium cobalt steel, this M42 Predator set maintains hardness at elevated temperatures and while drilling highly abrasive materials, allowing faster cutting speeds and longer tool life when drilling tough steels.

135-degree split point starts clean, reduces walking, and lowers thrust, ideal for both handheld drilling on the go and controlled shop work.

Fast, efficient chip evacuation with optimized flute geometry, keeping cutting edges cooler and extending bit life during repeated use. Whether you’re drilling hardened steel, stainless, or abrasive alloys, Predator Cobalt delivers reliable results hole after hole.

The set comes organized in a Premium heavy-duty steel index, clearly marked for quick size selection and also doubles as a #1–#60 drill gauge.

What Are Wire Gauge Drill Bits?

Wire gauge drill sizes, also called number drill sizes, run in reverse. The higher the number, the smaller the drill. The series runs from #80 up to #1, and letter sizes A through Z continue above #1. Every step between #60 and #1 is smaller than the 1/64″ step of a fractional set, so a number drill set fills the gaps between fractional sizes. That is why tap drill charts, clearance hole charts, and rivet specifications call out number drills. The hole has to match the chart, not the nearest fraction.

Features & Benefits

• M42 Predator™ Cobalt steel for hard-material drilling
• #1–#60 jobber-length range covers fine precision through larger pilot sizes
• All 60 wire gauge sizes, #60 (.0400″) through #1 (.2280″)
• 135° split point for fast starts and reduced walking
• Excellent heat resistance for extended tool life
• Fast chip removal for smoother drilling and cleaner holes
• Rugged steel index for durability and organization

Ideal Applications

• Hard steel
• Stainless steel
• Alloy and abrasive metals
• Maintenance, fabrication, automotive, and industrial shop use
• Tap drill holes for machine screw threads, #1-64 through 1/4-28
• Close-fit and free-fit clearance holes for #2 through #12 machine screws
• Rivet holes for aircraft and sheet metal work
• Gunsmithing, mold and die, and precision instrument work

Wire Gauge Drill Size Chart (#1–#60)

Tap Drill and Clearance Chart (Unified Machine Screw Threads)

Tap drill sizes are standard sizes for approximately 75% thread. Clearance holes for 1/4″ screws use letter sizes, which are not in this set.

Rivet Hole Drill Sizes

Also available in HSS and Carbide options.

Questions? – Call 1-800-350-TOOL (8665)