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Aircraft Grade Super Cobalt Drill Bits

From $1.65 to $6.85
Description Drill Size Approx
Length
Part Number Price Buy
SUPER COBALT DRILL #55551-7/8"
12-03791
$2.25
Quantity
SUPER COBALT DRILL 51512"
12-03698
$2.35
Quantity
SUPER COBALT DRILL #44442-1/8"
12-03792
$1.85
Quantity
SUPER COBALT DRILL #42 (1)422-1/4"
12-04212
$1.70
Quantity
SUPER COBALT DRILL #41412-3/8"
12-04213
$1.70
Quantity
SUPER COBALT DRILL #33 (1)332-7/16"
12-04216
$1.95
Quantity
SUPER COBALT DRILL #36 (1)362-1/2"
12-04215
$1.95
Quantity
SUPER COBALT DRILL #37372-1/2"
12-03793
$1.65
Quantity
SUPER COBALT DRILL #35 (1)#352-5/8"
12-04235
$1.95
Quantity
SUPER COBALT DRILL 1/81/8"2-3/4"
12-04225
$2.65
Quantity
SUPER COBALT DRILL #40402-3/4"
12-04214
$1.70
Quantity
SUPER COBALT DRILL #30302-3/4"
12-04217
$2.35
Quantity
SUPER COBALT DRILL #28 (1)282-15/16"
12-04218
$2.45
Quantity
SUPER COBALT DRILL #27273"
12-04219
$2.90
Quantity
SUPER COBALT DRILL 5/32 (1)5/32"3-1/8"
12-04226
$2.65
Quantity
SUPER COBALT DRILL #23 (1)233-1/8"
12-04220
$2.70
Quantity
SUPER COBALT DRILL #21213-5/16"
12-14221
$2.85
Quantity
SUPER COBALT DRILL #19193-5/16"
12-04221
$2.70
Quantity
SUPER COBALT DRILL 3/163/16"3-1/2"
12-04227
$3.35
Quantity
SUPER COBALT DRILL #12 (1)123-1/2"
12-04222
$3.75
Quantity
SUPER COBALT DRILL #10103-5/8"
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
$6.85
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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WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.

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Reviews

Dwayne R Verified Purchase

SUPER COBALT DRILL #40

November 16, 2023

Dwayne R Verified Purchase

SUPER COBALT DRILL #30

November 16, 2023

I have tried other drill bits and these are the best for working aluminum

Mary S Verified Purchase

SUPER COBALT DRILL 3/16

October 1, 2023

I have tried other drill bits and these are the best for working aluminum

Mary S Verified Purchase

SUPER COBALT DRILL #19

October 1, 2023

Nice drill bits.

Milon W Verified Purchase

SUPER COBALT DRILL #30

September 12, 2023

I ordered 5 and still one my first bit. Excellent product

Tony B Verified Purchase

SUPER COBALT DRILL #30

August 9, 2023

Richard H Verified Purchase

SUPER COBALT DRILL #30

June 15, 2023

Richard H Verified Purchase

SUPER COBALT DRILL #40

June 15, 2023

Larry E Verified Purchase

SUPER COBALT DRILL #40

March 19, 2023

Larry E Verified Purchase

SUPER COBALT DRILL #30

March 19, 2023

Q&A

Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

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.

Q: WHAT IS THE RECOMMENDED DRILL FOR THE AN6-20A BOLT

You would need at least a 3/8 drill.

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