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AIRCRAFT GRADE SUPER COBALT DRILL BITS

From $1.65 to $6.60
Description Drill Size Approx
Length
Part Number Price Buy
SUPER COBALT DRILL #55 55 1-7/8" 12-03791 $2.25
Quantity
SUPER COBALT DRILL 51 51 2" 12-03698 $2.35
Quantity
SUPER COBALT DRILL #44 44 2-1/8" 12-03792 $1.84
Quantity
SUPER COBALT DRILL #42 (1) 42 2-1/4" 12-04212 $1.70
Quantity
SUPER COBALT DRILL #41 41 2-3/8" 12-04213 $1.70
Quantity
SUPER COBALT DRILL #33 (1) 33 2-7/16" 12-04216 $1.95
Quantity
SUPER COBALT DRILL #36 (1) 36 2-1/2" 12-04215 $1.95
Quantity
SUPER COBALT DRILL #37 37 2-1/2" 12-03793 $1.65
Quantity
SUPER COBALT DRILL #35 (1) #35 2-5/8" 12-04235 $2.15
Quantity
SUPER COBALT DRILL 1/8 1/8" 2-3/4" 12-04225 $2.50
Quantity
SUPER COBALT DRILL #40 40 2-3/4" 12-04214 $1.70
Quantity
SUPER COBALT DRILL #30 30 2-3/4" 12-04217 $2.25
Quantity
SUPER COBALT DRILL #28 (1) 28 2-15/16" 12-04218 $2.45
Quantity
SUPER COBALT DRILL #27 27 3" 12-04219 $2.70
Quantity
SUPER COBALT DRILL 5/32 (1) 5/32" 3-1/8" 12-04226 $2.65
Quantity
SUPER COBALT DRILL #23 (1) 23 3-1/8" 12-04220 $2.70
Quantity
SUPER COBALT DRILL #21 21 3-5/16" 12-14221 $2.85
Quantity
SUPER COBALT DRILL #19 19 3-5/16" 12-04221 $2.70
Quantity
SUPER COBALT DRILL 3/16 3/16" 3-1/2" 12-04227 $3.35
Quantity
SUPER COBALT DRILL #12 (1) 12 3-1/2" 12-04222 $3.75
Quantity
SUPER COBALT DRILL #10 10 3-5/8" 12-04223 $3.75
Quantity
SUPER COBALT DRILL "D" (1) "D" 4" 12-04224 $4.95
Quantity
SUPER COBALT DRILL 1/4 (1) 1/4" 4" 12-04228 $4.60
Quantity
SUPER COBALT DRILL 5/16 (1) 5/16" 4-1/2" 12-04229 $6.60
Quantity
Subtotal $0.00
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Overview

These super cobalt hi-speed jobber length aircraft drill bits feature heavy duty construction to Type J aircraft specifications. Use to drill hard, tough metals, stainless steels, iron based and titanium alloys, and certain plastics. Hardness of cobalt permits speeds 30% over regular H.S.S. drills. Cobalt drills demand rigidly held, positive feed drilling equipment.
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Reviews

Cobalt is great for repeated drilling of fiberglass. Lasts longer than other bits.

Bob T
January 30, 2020

As always the quality of the product is excellent but I ordered two drills of the same size and neither was the right one. However one was mismarked by the manufacturer. The size difference was obvious to the eye. This was the first time in over 25 years that this has happened and the service you get from Aircraft Spruce is great.

Gary M
January 30, 2020

ok

Steve Y
July 26, 2019

ok

Steve Y
July 26, 2019

Drills Great

Edward B
March 5, 2019

Akira A
February 15, 2019

The metal sheets are fine. The drills are fine. And the rivets are fine. All good, thank you.

Bob C
December 13, 2018

Great quality, good price

Tim C
August 26, 2018

Used 1 (..and ordered 10) on a PA-12 wing to remove rivets, and its still going. VERY SATISFIED!

Ryan K
April 5, 2018

Denis L
July 28, 2017

Q&A

Q: What is the length of drill bit part number 12-04212?

The 12-04212 drill bit is 2-1/4" long.

Q: Are these bits 135 degree or 118 degree cut?

They have a 135 degree split.

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