Drill Size
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Maximum Material Thickness
Material
Finish
Application
Shank Size
Type
Style
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Special Interest
Step Drills
Step drills are capable of making various sizes of counterbore or countersink holes.
(17 items in Step Drills) 
Fastenal Part No. (SKU) 99414628
1/2" Unibit® #10 HSS Single Hole Step Drill
Manufacturer
IRWIN
Online Price: $24.44 / each
Available Inventory
Fastenal Part No. (SKU) 03854810104
#4 UNIBIT Step Drill - 3/16"-7/8" - 12 Hole Sizes
Manufacturer
IRWIN
Online Price: $69.31 / each
Available Inventory
Fastenal Part No. (SKU) 0227369
#4 UNIBIT Cobalt Step Drill - 3/16"-7/8" - 12 Hole Sizes
Manufacturer
IRWIN
Online Price: $87.45 / each
Available Inventory
Fastenal Part No. (SKU) 03854810101
#1 UNIBIT Step Drill - 1/8"-1/2" - 13 Hole Sizes
Manufacturer
IRWIN
Online Price: $25.70 / each
Available Inventory
Fastenal Part No. (SKU) 0227368
#3 UNIBIT Cobalt Step Drill - 1/4"-3/4" - 9 Hole Sizes
Manufacturer
IRWIN
Online Price: $67.37 / each
Available Inventory
Fastenal Part No. (SKU) 03854810103
#3 UNIBIT Step Drill - 1/4"-3/4" - 9 Hole Sizes
Manufacturer
IRWIN
Online Price: $45.97 / each
Available Inventory
Fastenal Part No. (SKU) 03854810102
#2 UNIBIT Step Drill - 3/16"-1/2" - 6 Hole Sizes
Manufacturer
IRWIN
Online Price: $25.09 / each
Available Inventory
Fastenal Part No. (SKU) 03854815101
UNIBIT™ 1/8" - 1/2" 13-Hole TiN Step Drill Bit
Manufacturer
IRWIN
Online Price: $37.20 / each
Available Inventory
Fastenal Part No. (SKU) 0227367
#2 UNIBIT Cobalt Step Drill - 3/16"-1/2" - 6 Hole Sizes
Manufacturer
IRWIN
Online Price: $40.66 / each
Available Inventory
Fastenal Part No. (SKU) 0249695
#4 UNIBIT Titanium Nitride (TiN) Step Drill - 3/16"-7/8" - 12 Hole Sizes
Manufacturer
IRWIN
Online Price: $76.84 / each
Available Inventory
Fastenal Part No. (SKU) 0227371
#20 UNIBIT Step Drill - 9/16" to 1" - 8 Hole Sizes - Hole Enlarging
Manufacturer
IRWIN
Online Price: $61.71 / each
Available Inventory
Fastenal Part No. (SKU) 0249693
#2 UNIBIT Titanium Nitride (TiN) Step Drill - 3/16"-1/2" - 6 Hole Sizes
Manufacturer
IRWIN
Online Price: $36.13 / each
Available Inventory