What is a Jobber Drill Bit

What is a Jobber Drill?

Eddie Burlem,

What Does the Term “Jobber” Mean?

The general definition of the term “jobber” is “a person or company that buys from manufacturers and sells to retailers”, most commonly used in the 1850-1950 period. At that time, manufacturers were mostly producing general purpose “for the trade” drill bits, not using specialized machining applications to make specific lengths or designs like today. These drills, were of medium length and suitable for a wide variety of jobs, coining the term “jobber-length”, reflecting the same concept of terms like “general purpose” and “multipurpose”. Today, jobber drill refers to the length of the drill itself.

What is a Jobber Drill Bit?

Today Jobber Drill Bit are manufactured in a number of different style to tackle a number of different applications. Jobber Drill Bits still remain the most commonly found type of drill bit. A jobber drill bit has a long length compared to its diameter. The length of the flute is between 8-12 or 9-14 times the diameter of the drill, depending on the drill specifications. For example, a 1/2″ diameter jobber drill will be able to drill a 4-1/2″ deep hole because it is 9 times the diameter in length. Jobber drills are measured using a number of different systems:jobber Drill Bit

  • Fractional Sizes
  • Letter Sizes
  • Wire Gauge Sizes
  • Metric Sizes
The size and measurement system you choose will depend on the application for which the drill will be used.

Jobber Drill Options Available at Tanner

Which Jobber Drill Do I Need?

Product Line XL5 Jobber Drill Bits HEX28 Jobber Drill Bit XGO Jobber Drill Bit 705 Jobber Drill Bit 705C Jobber Drill Bit
Main Features Heavy Duty, Penetrate Faster than Cobalt with Lower Fatigue Levels & Less Breakage Heavy Duty, Professional Grade for Quick Penetration & Accurate Drilling Every Time Heavy Duty, Outperform Ordinary Jobber Drills by Penetrating Faster & Lasting Longer General Purpose Drilling Heavy Duty Web Construction, Extremly Heat Resistant While Maintaining their Cutting Ability
Shank Type Straight Shank 1/4″ Hex Shank Straight Shank Straight Shank Straight Shank
Point Type 135 Degree Split Point 135 Degree Split Point 135 Degree Split Point 118 Degree Point 135 Degree Split Point
Material High-Speed Steel (HSS) High-Speed Steel (HSS) High-Speed Steel (HSS) High-Speed Steel (HSS) M42 Cobalt High Speed Steel (HSS)
Finish Black & Bright Finish with NOMO Surface Treatment Black & Gold Surface Treatment Black Oxide Finish Type “J” Gold Oxide Finish
Applications Easily cuts through high carbon steels, alloyed steels, steel drop forgings, grey cast iron, titanium, stainless steel, nimonic alloys, manganese, spring steels, armor plate Engineered for use in impact drivers and cordless drills with hex shank capacity. Ideal for wood, aluminum and low to medium steel. Recommended for drilling high tensile alloy steels & stainless steels. Very popular in truck and trailer manufacturing. Low carbon steels, alloyed steels, steel drop forgings, grey cast iron. High tensile materials such as high strength alloy steels, stainless steel, titanium, manganese steel, armor plate and inconel.
Cutting Tools