Shop All Savings
Appliances
Bath & Faucets
Blinds & Window Treatment
Building Materials
Lumber & Composites
Cleaning
Decor & Furniture
Lighting & Ceiling Fans
Doors & Windows
Electrical
Flooring & Area Rugs
Hardware
Heating & Cooling
Kitchen & Kitchenware
Lawn & Garden
Outdoor Living & Patio
Paint
Plumbing
Seasonal Decor
Smart Home
Storage & Organization
Tools
Automotive
Furniture
Gift Cards
Credit Cards
View All Home Services
Tool Rental
Benefits & Services For the Pro
Project Calculators
View All DIY Projects
Local Ad
Store Finder
Site Map
#1 Home Improvement Retailer
Select store
...
...
Cart
Select store
...
...
Shop All
Services
DIY
Log In
Cart
Home
/
Tools
/
Power Tool Accessories
/
Drill Bits
CAST IRON DRILL BITS
Get It Fast
In Stock at Store Today
Free 1-2 Day Delivery
Next-Day Delivery
Filters
Filters
Clear All
Material Application: Cast Iron
Drilling Depth (in): 0.86614173
Drilling Depth (in): 4.5
Drilling Depth (in): 2.609375
Drilling Depth (in): 1.75
Get It Fast
In Stock at Store Today
Free 1-2 Day Delivery
Next-Day Delivery
Availability
Show Out of Stock
Department
Tools
Power Tool Accessories
Drill Bits
Twist Drill Bits
Countersink Bits
Review Rating
5
4 & Up
3 & Up
2 & Up
1 & Up
Brand
Drill America
Milwaukee
Price
to
Apply
$0 - $10
$10 - $20
$20 - $30
$30 - $40
$50 - $100
$100 - $150
$150 - $200
Bit Diameter
1/2 in
T
#28
3/8 in
5/16 in
S
#1
#29
#2
#6
1.5 mm
9/64 in
Bit Length (in.)
1.75 in
1.89 in
2.87 in
3 in
3.06 in
4.37 in
6 in
Bit Material
High Speed Steel
Cobalt
Carbide
Titanium
Material Application
Stainless Steel
Cast Iron
Aluminum
Duct/Sheet Metal
Steel
Copper
Nickel
PVC
Wood
Angle Iron
Plaster
Vinyl Flooring
Linoleum
Number of Pieces
1 Piece
5-10 Pieces
11-20 Pieces
Shank Style
Straight
3-Flat
Hex
Round
Shank Diameter
1/4 in
3/8 in
T
#28
S
#1
#29
#2
#6
1/2 in
1.5 mm
9/64 in
Individual/Set
Individual
Drilling Depth (in)
0.06
0.0625
0.078125
0.125
0.1875
0.2364
0.25
0.3125
0.375
0.5
0.5625
0.625
0.6698
0.6875
0.734375
0.7486
0.75
0.8125
0.82857
0.875
0.9375
0.985
1
1.015625
1.0625
1.125
1.1426
1.1875
1.25
1.3125
1.375
1.4375
1.5
1.5625
1.625
1.6875
1.75
1.8125
1.875
1.8912
1.9375
2
2.0094
2.125
2.1875
2.25
2.3125
2.375
2.435
2.4375
2.46875
2.5
2.500
2.5625
2.609375
2.625
2.6398
2.75
2.8125
2.875
2.890525
2.9375
3
3.0625
3.125
3.1875
3.3125
3.375
3.4278
3.4375
3.5
3.500
3.6248
3.625
3.75
3.875
3.9375
4
4.0625
4.125
4.1875
4.250
4.25
4.3125
4.375
4.5
4.75
4.8125
4.875
5
5.125
5.1875
5.375
5.625
6
6.125
6.375
13
18
20
View Results
All Filters
Category
Bit Diameter
Bit Length (in.)
Bit Material
Material Application
Material Application: Cast Iron
Drilling Depth (in): 0.86614173
Drilling Depth (in): 4.5
Drilling Depth (in): 2.609375
Drilling Depth (in): 1.75
Clear All
17 Results
Sort by:
Top Sellers
Top Sellers
Most Popular
Price Low to High
Price High to Low
Top Rated Products
More Options Available
$
26
.
97
(4038)
Model# 48-89-2329
Milwaukee
1/2 in. Cobalt Red Helix Twist Drill Bit
Add to Cart
Compare
Top Rated
More Options Available
$
119
.
00
(
$23.80
/unit
)
(355)
Model# 48-89-2329-X5
Milwaukee
1/2 in. Cobalt Red Helix Twist Drill Bit (5-Pack)
Add to Cart
Compare
More Options Available
$
31
.
01
(
$5.17
/unit
)
(83)
Model# HD3F1/2P6
Drill America
1/2 in. HSS Black and Gold Contractor Drill Bit with Split Point and 3-Flat Shank (6-Pack)
Add to Cart
Compare
More Options Available
$
198
.
00
(
$19.80
/unit
)
(249)
Model# 48-89-2329-X10
Milwaukee
1/2 in. Cobalt Red Helix Twist Drill Bit (10-Pack)
Add to Cart
Compare
More Options Available
$
54
.
60
(
$10.92
/unit
)
(253)
Model# 48-89-4617-X5
Milwaukee
SHOCKWAVE 5/16 in. Titanium Twist Drill Bit (5-Pack)
Add to Cart
Compare
$
5
.
23
(4)
Model# DEWCSK3/8-82
Drill America
3/8 in. 82-Degree High Speed Steel Countersink Bit with 3 Flutes
Add to Cart
Compare
$
11
.
95
(
$1.00
/unit
)
(26)
Model# DWDCO9/64P12
Drill America
9/64 in. M35 Cobalt Drill Bit (12-Piece)
Add to Cart
Compare
More Options Available
$
109
.
00
(
$10.90
/unit
)
(147)
Model# 48-89-4617-X10
Milwaukee
SHOCKWAVE 5/16 in. Titanium Twist Drill Bit (10-Pack)
Add to Cart
Compare
$
5
.
23
(3)
Model# DEWCSK3/8-100
Drill America
3/8 in. 100-Degree High Speed Steel Countersink Bit with 3 Flutes
Add to Cart
Compare
More Options Available
$
23
.
32
(15)
Model# DMOD1
Drill America
#1 Solid Carbide Twist Drill Bit
Add to Cart
Compare
More Options Available
$
21
.
01
(
$1.75
/unit
)
(14)
Model# D/AMMCO1.50P12
Drill America
1.50 mm M42 Cobalt Drill Bit (12-Piece)
Add to Cart
Compare
More Options Available
$
22
.
31
(
$1.86
/unit
)
(1)
Model# DWDLH29P12
Drill America
#29 High Speed Steel Left Hand Drill Bit (12-Pack)
Add to Cart
Compare