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Home
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Drill Bits
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Twist Drill Bits
BEST RATED TWIST DRILL BITS
Shop products with the best ratings based on our customer reviews
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Review Rating: Best Rated
Bit Diameter: 5/16 in
Material Application: Angle Iron
Material Application: Cast Iron
Get It Fast
In Stock at Store Today
Availability
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Department
Tools
Power Tool Accessories
Drill Bits
Twist Drill Bits
Brand
Drill America
CLE-LINE
Price
to
Apply
$10 - $20
$20 - $30
$50 - $100
Review Rating
5
4 & Up
3 & Up
2 & Up
1 & Up
Bit Diameter
#22
#25
#12
#15
#17
#18
#23
#24
#2
#37
#44
#46
#5
#6
1/4 in
1/8 in
#10
#13
#16
#19
#27
#34
#39
#41
#45
#47
#52
#57
#59
#60
#8
#9
3/16 in
5/16 in
5/32 in
9/64 in
11/32 in
13/32 in
19/64 in
Z
#14
#1
#20
#21
#29
#30
#31
#32
#33
#35
#38
#3
#48
#49
#4
#51
#53
#54
#56
#58
#73
#78
#79
#7
#80
3/32 in
3/8 in
7/64 in
9/32 in
11/64 in
13/64 in
15/32 in
17/64 in
29/64 in
B
D
I
M
O
P
U
V
W
X
Y
#28
#36
#40
#42
#43
#50
#55
#61
#62
#63
#65
#66
#68
#69
#71
Bit Material
High Speed Steel
Cobalt
Number of Pieces
1 Piece
5-10 Pieces
11-20 Pieces
Bit Length (in.)
4.5 in
12 in
Material Application
Stainless Steel
Angle Iron
Cast Iron
Copper
Steel
Wood
Aluminum
Duct/Sheet Metal
Nickel
PVC
Vinyl Flooring
Gypsum
Linoleum
Plaster
Shank Style
Straight
3-Flat
Drilling Depth (in)
2.8125
3.1875
Featured Keywords
135 degree
black oxide finish
black oxide
drilling metal
extra length
high speed steel
iron steel
length extension drill bit
round shank
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Bit Diameter
Bit Material
Number of Pieces
Bit Length (in.)
Material Application
Review Rating: Best Rated
Bit Diameter: 5/16 in
Material Application: Angle Iron
Material Application: Cast Iron
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3 Results
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Top Rated Products
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$
21
.
69
(
$1.81
/unit
)
(83)
Model# HD3F5/16P12
Drill America
5/16 in. HSS Black and Gold Contractor Drill Bit with Split Point and 3-Flat Shank (12-Pack)
Add to Cart
Compare
More Options Available
$
17
.
33
(50)
Model# GLBCOX125/16
Drill America
5/16 in. x 12 in. Cobalt Aircraft Extension Drill Bit
Add to Cart
Compare
More Options Available
$
61
.
97
/package
(
$10.33
/unit
)
(1)
Model# C23737
CLE-LINE
1805 5/16 in. High Speed Steel Aircraft Extended Length Extension Drill Bit (6-Piece)
Add to Cart
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