Description | Drill Size | Approx Length |
Part Number | Price | Buy |
---|---|---|---|---|---|
SUPER COBALT DRILL #55 | 55 | 1-7/8" | 12-03791 | $2.25 | |
SUPER COBALT DRILL 51 | 51 | 2" | 12-03698 | $2.35 | |
SUPER COBALT DRILL #44 | 44 | 2-1/8" | 12-03792 | $1.84 | |
SUPER COBALT DRILL #42 (1) | 42 | 2-1/4" | 12-04212 | $1.70 | |
SUPER COBALT DRILL #41 | 41 | 2-3/8" | 12-04213 | $1.70 | |
SUPER COBALT DRILL #33 (1) | 33 | 2-7/16" | 12-04216 | $1.95 | |
SUPER COBALT DRILL #36 (1) | 36 | 2-1/2" | 12-04215 | $1.95 | |
SUPER COBALT DRILL #37 | 37 | 2-1/2" | 12-03793 | $1.65 | |
SUPER COBALT DRILL #35 (1) | #35 | 2-5/8" | 12-04235 | $2.15 | |
SUPER COBALT DRILL 1/8 | 1/8" | 2-3/4" | 12-04225 | $2.50 | |
SUPER COBALT DRILL #40 | 40 | 2-3/4" | 12-04214 | $1.70 | |
SUPER COBALT DRILL #30 | 30 | 2-3/4" | 12-04217 | $2.25 | |
SUPER COBALT DRILL #28 (1) | 28 | 2-15/16" | 12-04218 | $2.45 | |
SUPER COBALT DRILL #27 | 27 | 3" | 12-04219 | $2.70 | |
SUPER COBALT DRILL 5/32 (1) | 5/32" | 3-1/8" | 12-04226 | $2.65 | |
SUPER COBALT DRILL #23 (1) | 23 | 3-1/8" | 12-04220 | $2.70 | |
SUPER COBALT DRILL #21 | 21 | 3-5/16" | 12-14221 | $2.85 | |
SUPER COBALT DRILL #19 | 19 | 3-5/16" | 12-04221 | $2.70 | |
SUPER COBALT DRILL 3/16 | 3/16" | 3-1/2" | 12-04227 | $3.35 | |
SUPER COBALT DRILL #12 (1) | 12 | 3-1/2" | 12-04222 | $3.75 | |
SUPER COBALT DRILL #10 | 10 | 3-5/8" | 12-04223 | $3.75 | |
SUPER COBALT DRILL "D" (1) | "D" | 4" | 12-04224 | $4.95 | |
SUPER COBALT DRILL 1/4 (1) | 1/4" | 4" | 12-04228 | $4.60 | |
SUPER COBALT DRILL 5/16 (1) | 5/16" | 4-1/2" | 12-04229 | $6.85 |
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. |
Nice sharp accurate drill bits.
Good so far.
Did the job , Thanks Joe
last a long time
Cobalt is great for repeated drilling of fiberglass. Lasts longer than other bits.
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.
ok
ok
Drills Great
The 12-04212 drill bit is 2-1/4" long.
They have a 135 degree split.
You would need at least a 3/8 drill.