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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
$2.50
Quantity
SUPER COBALT DRILL #40402-3/4"
12-04214
$1.70
Quantity
SUPER COBALT DRILL #30302-3/4"
12-04217
$2.25
Quantity
SUPER COBALT DRILL #28 (1)282-15/16"
12-04218
$2.45
Quantity
SUPER COBALT DRILL #27273"
12-04219
$2.80
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
$3.25
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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Reviews

Michael C Verified Purchase

SUPER COBALT DRILL #19

October 30, 2022

works great!!

Doug Verified Purchase

SUPER COBALT DRILL #40

October 16, 2022

Good quality and fair price.

Albert R Verified Purchase

SUPER COBALT DRILL #40

July 8, 2022

Good quality bits and reasonable price. A little disappointed they weren’t individually packaged. More important with larger bits I guess.

Albert R Verified Purchase

SUPER COBALT DRILL #30

July 8, 2022

WORKS AS IT SHOULD!

Frederick A Verified Purchase

SUPER COBALT DRILL #30

April 29, 2022

Good, sharp bits.

Carsten S Verified Purchase

SUPER COBALT DRILL #40

April 22, 2022

Good, sharp bits.

Carsten S Verified Purchase

SUPER COBALT DRILL #30

April 22, 2022

Leonard H Verified Purchase

SUPER COBALT DRILL 1/8

April 8, 2022

Leonard H Verified Purchase

SUPER COBALT DRILL #23 (1)

April 8, 2022

Leonard H Verified Purchase

SUPER COBALT DRILL 1/4 (1)

April 8, 2022

Q&A

Please note, Pilotshop'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. Pilotshop 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.