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?
Today Jobber Drills are manufactured in a number of different style to tackle a number of different applications. Jobber Drills 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:
- 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
- XL5 Heavy Duty Jobber Length Twist Drills
- HEX28 Hex Shank Jobber Length Twist Drills
- XGO Black & Gold Jobber Length Twist Drills
- 705 General Purpose Jobber Length Twist Drills
- 705C Cobalt Jobber Length Twist Drills
Which Jobber Drill Do I Need?
|Product Line||XL5 Jobber Drills||HEX28 Jobber Drills||XGO Jobber Drills||705 Jobber Drills||705C Jobber Drills|
|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.|