SAME DAY UPS SHIPPING ON ORDERS PLACED BY 4 PM | 877-4-SPRUCE

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 $2.45
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
Add to Wishlist

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.
  • Customers Also Viewed
  • Frequently Purchased With

Reviews

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

These are very high quality drill bits at a great price. I am a machinist and buy bits from a lot of different sources, but much prefer these in the sizes Spruce has available.

Brian
June 19, 2017

I ordered two #30 Bits in case one went dull. I had to drill out 96 rivets in a Cessna. No problem and I never needed the second bit. I center punched each rivet and the bit never wandered and it grabbed perfectly.

Bob
March 23, 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.

View in Catalog

View Image View in Catalog