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Drill Bits
DUCT/SHEET METAL DRILL BITS
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Bit Diameter: #31
Bit Diameter: #50
Material Application: Duct/Sheet Metal
Get It Fast
In Stock at Store Today
Availability
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Department
Tools
Power Tool Accessories
Drill Bits
Twist Drill Bits
Review Rating
5
4 & Up
3 & Up
2 & Up
1 & Up
Brand
Drill America
Price
to
Apply
$0 - $10
$10 - $20
$20 - $30
Bit Diameter
#2
1/4 in
1/8 in
1/2 in
3/8 in
3/16 in
3/4 in
5/16 in
#3
#1
#20
T25
#25
#4
#15
#27
#5
5/32 in
#12
#13
#18
#34
#38
#39
#49
#9
3/32 in
5/8 in
7/16 in
9/64 in
11/64 in
17/64 in
19/64 in
B
D
#24
#37
#47
#59
#6
15/32 in
A
M
Y
Z
#14
#22
#23
#46
#48
#51
#52
#8
1/16 in
7/64 in
C
T10
T
#17
#31
#35
#44
#45
#53
1 in
2 in
11/32 in
13/32 in
13/64 in
21/64 in
25/64 in
31/64 in
G
K
N
O
T15
W
X
#10
#16
#30
#32
#33
#41
#57
#60
15/64 in
23/64 in
H
I
Q
S
T20
#26
#40
#56
#58
17/32 in
37/64 in
Bit Length (in.)
1.87 in
2 in
2.12 in
2.25 in
2.75 in
6 in
12 in
Material Application
Stainless Steel
Aluminum
Angle Iron
Cast Iron
Copper
Duct/Sheet Metal
Nickel
PVC
Steel
Plaster
Wood
Vinyl Flooring
Linoleum
Bit Material
High Speed Steel
Cobalt
Carbide
Shank Diameter
#31
#50
Number of Pieces
1 Piece
11-20 Pieces
Shank Style
Straight
Round
Individual/Set
Individual
Drilling Depth (in)
0.375
0.875
1
1.25
1.625
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Bit Diameter
Bit Length (in.)
Material Application
Bit Material
Bit Diameter: #31
Bit Diameter: #50
Material Application: Duct/Sheet Metal
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10 Results
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Top Rated Products
More Options Available
$
12
.
50
(15)
Model# DMOD31
Drill America
#31 Solid Carbide Twist Drill Bit
Add to Cart
Compare
More Options Available
$
2
.
78
(16)
Model# GLBCOX631
Drill America
#31 x 6 in. Cobalt Aircraft Extension Drill Bit
Add to Cart
Compare
More Options Available
$
9
.
68
(
81
¢
/unit
)
(7)
Model# DWDCO50P12
Drill America
#50 M35 Cobalt Drill Bit (12-Piece)
Add to Cart
Compare
More Options Available
$
8
.
06
(
67
¢
/unit
)
(6)
Model# D/AP50P12
Drill America
#50 High Speed Steel Twist Drill Bit with Bright Finish (12-Pack)
Add to Cart
Compare
More Options Available
$
17
.
30
(
$1.44
/unit
)
(3)
Model# D/ASTCO31P12
Drill America
#31 M42 Cobalt Short Drill Bit (12-Piece)
Add to Cart
Compare
More Options Available
$
4
.
90
(7)
Model# DWDA/CX1231
Drill America
#31 x 12 in. High Speed Steel Aircraft Extension Drill Bit
Add to Cart
Compare
More Options Available
$
7
.
94
(
66
¢
/unit
)
(3)
Model# DWDSP31P12
Drill America
#31 High Speed Steel Black Oxide General Purpose Split Point Twist Drill Bit (12-Pack)
Add to Cart
Compare
More Options Available
$
23
.
73
(
$1.98
/unit
)
(1)
Model# DWDLH31P12
Drill America
#31 High Speed Steel Left Hand Drill Bit (12-Pack)
Add to Cart
Compare
More Options Available
$
8
.
64
(
72
¢
/unit
)
(1)
Model# D/AN50P12
Drill America
#50 High Speed Steel Premium General Purpose Black Oxide Black Oxide Twist Drill Bit (12-Pack)
Add to Cart
Compare
More Options Available
$
8
.
64
(
72
¢
/unit
)
(1)
Model# D/AST31P12
Drill America
#31 High Speed Steel Premium Short Drill Bit (12-Piece)
Add to Cart
Compare