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Step Drill Bits

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Irwin Unibit 10220 Hole Enlarging Step Drill Bit, 9/16 in Dia Min Hole, 1 in Dia Max Hole, 8 Steps, 8 Hole Sizes, 7/16 in Shank
Stanley Black & Decker
Irwin Unibit 10220 Hole Enlarging Step Drill Bit, 9/16 in Dia Min Hole, 1 in Dia Max Hole, 8 Steps, 8 Hole Sizes, 7/16 in Shank
Part #376510220
MFG #10220
Applicable Materials
Aluminum, Brass, Copper, Laminates, Plastic and Stainless Steel
Country of Origin
US
Cutting Edge Material
HSS

$55.38

 / EA
Irwin Unibit 10231 Step Drill Bit, 1/8 in Dia Min Hole, 1/2 in Dia Max Hole, 13 Steps, HSS, 13 Hole Sizes, 1/4 in Shank
Stanley Black & Decker
Irwin Unibit 10231 Step Drill Bit, 1/8 in Dia Min Hole, 1/2 in Dia Max Hole, 13 Steps, HSS, 13 Hole Sizes, 1/4 in Shank
Part #376510231
MFG #10231
Applicable Materials
Aluminum, Brass, Copper, Laminates, Plastic and Stainless Steel
Country of Origin
US
Cutting Edge Material
HSS

$26.87

 / EA
Irwin Unibit 10232 Self-Starting Step Drill Bit, 3/16 in Dia Min Hole, 1/2 in Dia Max Hole, 6 Steps, 6 Hole Sizes, 1/4 in Shank
Stanley Black & Decker
Irwin Unibit 10232 Self-Starting Step Drill Bit, 3/16 in Dia Min Hole, 1/2 in Dia Max Hole, 6 Steps, 6 Hole Sizes, 1/4 in Shank
Part #376511232
MFG #10232
Applicable Materials
Aluminum, Brass, Copper, Laminates, Plastic and Stainless Steel
Country of Origin
US
Cutting Edge Material
HSS

$28.82

 / EA
Irwin Unibit 10233 Self-Starting Step Drill Bit, 1/4 in Dia Min Hole, 3/4 in Dia Max Hole, 9 Steps, 9 Hole Sizes, 3/8 in Shank
Stanley Black & Decker
Irwin Unibit 10233 Self-Starting Step Drill Bit, 1/4 in Dia Min Hole, 3/4 in Dia Max Hole, 9 Steps, 9 Hole Sizes, 3/8 in Shank
Part #376511233
MFG #10233
Applicable Materials
Aluminum, Brass, Copper, Laminates, Plastic and Stainless Steel
Country of Origin
US
Cutting Edge Material
HSS

$63.89

 / EA
Irwin Unibit 10234SM Step Drill Bit, 3/16 in Dia Min Hole, 7/8 in Dia Max Hole, 12 Steps, HSS, 12 Hole Sizes, 3/8 in Shank
Stanley Black & Decker
Irwin Unibit 10234SM Step Drill Bit, 3/16 in Dia Min Hole, 7/8 in Dia Max Hole, 12 Steps, HSS, 12 Hole Sizes, 3/8 in Shank
Part #376510234
MFG #10234
Applicable Materials
Aluminum, Brass, Copper, Laminates, Plastic and Stainless Steel
Country of Origin
CN, US
Cutting Edge Material
HSS

$81.95

 / EA
Irwin Unibit 10235 Step Drill Bit, 1/4 in Dia Min Hole, 1-3/8 in Dia Max Hole, 10 Steps, HSS, 10 Hole Sizes, 7/16 in Shank
Stanley Black & Decker
Irwin Unibit 10235 Step Drill Bit, 1/4 in Dia Min Hole, 1-3/8 in Dia Max Hole, 10 Steps, HSS, 10 Hole Sizes, 7/16 in Shank
Part #376510235
MFG #10235
Applicable Materials
Aluminum, Brass, Copper, Laminates, Plastic and Stainless Steel
Country of Origin
US
Cutting Edge Material
HSS

$108.73

 / EA
Irwin Unibit 10239SM Step Drill Bit, 7/8 in Dia Min Hole, 1-1/8 in Dia Max Hole, 2 Steps, HSS, 2 Hole Sizes, 7/16 in Shank
Stanley Black & Decker
Irwin Unibit 10239SM Step Drill Bit, 7/8 in Dia Min Hole, 1-1/8 in Dia Max Hole, 2 Steps, HSS, 2 Hole Sizes, 7/16 in Shank
Part #376510239
MFG #10239
Applicable Materials
Aluminum, Brass, Copper, Laminates, Plastic and Stainless Steel
Country of Origin
US
Cutting Edge Material
HSS

$82.25

 / EA
Irwin Unibit 10310 Self-Starting Step Drill Bit, 1/2 in Dia Min Hole, 1/2 in Dia Max Hole, 1 Steps, 1 Hole Sizes, 1/4 in Shank
Stanley Black & Decker
Irwin Unibit 10310 Self-Starting Step Drill Bit, 1/2 in Dia Min Hole, 1/2 in Dia Max Hole, 1 Steps, 1 Hole Sizes, 1/4 in Shank
Part #376510310
MFG #10310
Applicable Materials
Aluminum, Brass, Copper, Laminates, Plastic and Stainless Steel
Country of Origin
US
Cutting Edge Material
HSS

$27.90

 / EA
Irwin Unibit 10311 Step Drill Bit, 7/8 in Dia Min Hole, 7/8 in Dia Max Hole, HSS, 1 Hole Sizes, 3/8 in Shank
Stanley Black & Decker
Irwin Unibit 10311 Step Drill Bit, 7/8 in Dia Min Hole, 7/8 in Dia Max Hole, HSS, 1 Hole Sizes, 3/8 in Shank
Part #376510311
MFG #10311ZR
Applicable Materials
Aluminum, Brass, Copper, Laminates, Plastic and Stainless Steel
Country of Origin
US
Cutting Edge Material
HSS

$57.58

 / EA
Irwin Unibit 10312 Step Drill Bit, 3/8 in Dia Min Hole, 3/8 in Dia Max Hole, HSS, 1 Hole Sizes, 1/4 in Shank
Stanley Black & Decker
Irwin Unibit 10312 Step Drill Bit, 3/8 in Dia Min Hole, 3/8 in Dia Max Hole, HSS, 1 Hole Sizes, 1/4 in Shank
Part #376510312
MFG #10312ZR
Applicable Materials
Aluminum, Brass, Copper, Laminates, Plastic and Stainless Steel
Country of Origin
US
Cutting Edge Material
HSS

$22.45

 / EA
Irwin Unibit 10313 Step Drill Bit, 1-1/8 in Dia Min Hole, 1-1/8 in Dia Max Hole, 1 Steps, HSS, 1 Hole Sizes, 7/16 in Shank
Stanley Black & Decker
Irwin Unibit 10313 Step Drill Bit, 1-1/8 in Dia Min Hole, 1-1/8 in Dia Max Hole, 1 Steps, HSS, 1 Hole Sizes, 7/16 in Shank
Part #376510313
MFG #10313ZR
Applicable Materials
Aluminum, Brass, Copper, Laminates, Plastic and Stainless Steel
Country of Origin
US
Cutting Edge Material
HSS

$82.78

 / EA
Irwin Unibit 10314 Step Drill Bit, 1-7/32 in Dia Min Hole, 1-7/32 in Dia Max Hole, HSS, 1 Hole Sizes, 7/16 in Shank
Stanley Black & Decker
Irwin Unibit 10314 Step Drill Bit, 1-7/32 in Dia Min Hole, 1-7/32 in Dia Max Hole, HSS, 1 Hole Sizes, 7/16 in Shank
Part #376510314
MFG #10314
Applicable Materials
Aluminum, Brass, Copper, Laminates, Plastic and Stainless Steel
Country of Origin
US
Cutting Edge Material
HSS

$79.58

 / EA
Irwin Unibit 10220 Hole Enlarging Step Drill Bit, 9/16 in Dia Min Hole, 1 in Dia Max Hole, 8 Steps, 8 Hole Sizes, 7/16 in Shank
Stanley Black & Decker
Irwin Unibit 10220 Hole Enlarging Step Drill Bit, 9/16 in Dia Min Hole, 1 in Dia Max Hole, 8 Steps, 8 Hole Sizes, 7/16 in Shank
Part #376510220
MFG #10220
Applicable Materials
Aluminum, Brass, Copper, Laminates, Plastic and Stainless Steel
Country of Origin
US
Cutting Edge Material
HSS

$55.38

 / EA
Irwin Unibit 10231 Step Drill Bit, 1/8 in Dia Min Hole, 1/2 in Dia Max Hole, 13 Steps, HSS, 13 Hole Sizes, 1/4 in Shank
Stanley Black & Decker
Irwin Unibit 10231 Step Drill Bit, 1/8 in Dia Min Hole, 1/2 in Dia Max Hole, 13 Steps, HSS, 13 Hole Sizes, 1/4 in Shank
Part #376510231
MFG #10231
Applicable Materials
Aluminum, Brass, Copper, Laminates, Plastic and Stainless Steel
Country of Origin
US
Cutting Edge Material
HSS

$26.87

 / EA
Irwin Unibit 10232 Self-Starting Step Drill Bit, 3/16 in Dia Min Hole, 1/2 in Dia Max Hole, 6 Steps, 6 Hole Sizes, 1/4 in Shank
Stanley Black & Decker
Irwin Unibit 10232 Self-Starting Step Drill Bit, 3/16 in Dia Min Hole, 1/2 in Dia Max Hole, 6 Steps, 6 Hole Sizes, 1/4 in Shank
Part #376511232
MFG #10232
Applicable Materials
Aluminum, Brass, Copper, Laminates, Plastic and Stainless Steel
Country of Origin
US
Cutting Edge Material
HSS

$28.82

 / EA
Irwin Unibit 10233 Self-Starting Step Drill Bit, 1/4 in Dia Min Hole, 3/4 in Dia Max Hole, 9 Steps, 9 Hole Sizes, 3/8 in Shank
Stanley Black & Decker
Irwin Unibit 10233 Self-Starting Step Drill Bit, 1/4 in Dia Min Hole, 3/4 in Dia Max Hole, 9 Steps, 9 Hole Sizes, 3/8 in Shank
Part #376511233
MFG #10233
Applicable Materials
Aluminum, Brass, Copper, Laminates, Plastic and Stainless Steel
Country of Origin
US
Cutting Edge Material
HSS

$63.89

 / EA
Irwin Unibit 10234SM Step Drill Bit, 3/16 in Dia Min Hole, 7/8 in Dia Max Hole, 12 Steps, HSS, 12 Hole Sizes, 3/8 in Shank
Stanley Black & Decker
Irwin Unibit 10234SM Step Drill Bit, 3/16 in Dia Min Hole, 7/8 in Dia Max Hole, 12 Steps, HSS, 12 Hole Sizes, 3/8 in Shank
Part #376510234
MFG #10234
Applicable Materials
Aluminum, Brass, Copper, Laminates, Plastic and Stainless Steel
Country of Origin
CN, US
Cutting Edge Material
HSS

$81.95

 / EA
Irwin Unibit 10235 Step Drill Bit, 1/4 in Dia Min Hole, 1-3/8 in Dia Max Hole, 10 Steps, HSS, 10 Hole Sizes, 7/16 in Shank
Stanley Black & Decker
Irwin Unibit 10235 Step Drill Bit, 1/4 in Dia Min Hole, 1-3/8 in Dia Max Hole, 10 Steps, HSS, 10 Hole Sizes, 7/16 in Shank
Part #376510235
MFG #10235
Applicable Materials
Aluminum, Brass, Copper, Laminates, Plastic and Stainless Steel
Country of Origin
US
Cutting Edge Material
HSS

$108.73

 / EA
Irwin Unibit 10239SM Step Drill Bit, 7/8 in Dia Min Hole, 1-1/8 in Dia Max Hole, 2 Steps, HSS, 2 Hole Sizes, 7/16 in Shank
Stanley Black & Decker
Irwin Unibit 10239SM Step Drill Bit, 7/8 in Dia Min Hole, 1-1/8 in Dia Max Hole, 2 Steps, HSS, 2 Hole Sizes, 7/16 in Shank
Part #376510239
MFG #10239
Applicable Materials
Aluminum, Brass, Copper, Laminates, Plastic and Stainless Steel
Country of Origin
US
Cutting Edge Material
HSS

$82.25

 / EA
Irwin Unibit 10310 Self-Starting Step Drill Bit, 1/2 in Dia Min Hole, 1/2 in Dia Max Hole, 1 Steps, 1 Hole Sizes, 1/4 in Shank
Stanley Black & Decker
Irwin Unibit 10310 Self-Starting Step Drill Bit, 1/2 in Dia Min Hole, 1/2 in Dia Max Hole, 1 Steps, 1 Hole Sizes, 1/4 in Shank
Part #376510310
MFG #10310
Applicable Materials
Aluminum, Brass, Copper, Laminates, Plastic and Stainless Steel
Country of Origin
US
Cutting Edge Material
HSS

$27.90

 / EA
Irwin Unibit 10311 Step Drill Bit, 7/8 in Dia Min Hole, 7/8 in Dia Max Hole, HSS, 1 Hole Sizes, 3/8 in Shank
Stanley Black & Decker
Irwin Unibit 10311 Step Drill Bit, 7/8 in Dia Min Hole, 7/8 in Dia Max Hole, HSS, 1 Hole Sizes, 3/8 in Shank
Part #376510311
MFG #10311ZR
Applicable Materials
Aluminum, Brass, Copper, Laminates, Plastic and Stainless Steel
Country of Origin
US
Cutting Edge Material
HSS

$57.58

 / EA
Irwin Unibit 10312 Step Drill Bit, 3/8 in Dia Min Hole, 3/8 in Dia Max Hole, HSS, 1 Hole Sizes, 1/4 in Shank
Stanley Black & Decker
Irwin Unibit 10312 Step Drill Bit, 3/8 in Dia Min Hole, 3/8 in Dia Max Hole, HSS, 1 Hole Sizes, 1/4 in Shank
Part #376510312
MFG #10312ZR
Applicable Materials
Aluminum, Brass, Copper, Laminates, Plastic and Stainless Steel
Country of Origin
US
Cutting Edge Material
HSS

$22.45

 / EA
Irwin Unibit 10313 Step Drill Bit, 1-1/8 in Dia Min Hole, 1-1/8 in Dia Max Hole, 1 Steps, HSS, 1 Hole Sizes, 7/16 in Shank
Stanley Black & Decker
Irwin Unibit 10313 Step Drill Bit, 1-1/8 in Dia Min Hole, 1-1/8 in Dia Max Hole, 1 Steps, HSS, 1 Hole Sizes, 7/16 in Shank
Part #376510313
MFG #10313ZR
Applicable Materials
Aluminum, Brass, Copper, Laminates, Plastic and Stainless Steel
Country of Origin
US
Cutting Edge Material
HSS

$82.78

 / EA
Irwin Unibit 10314 Step Drill Bit, 1-7/32 in Dia Min Hole, 1-7/32 in Dia Max Hole, HSS, 1 Hole Sizes, 7/16 in Shank
Stanley Black & Decker
Irwin Unibit 10314 Step Drill Bit, 1-7/32 in Dia Min Hole, 1-7/32 in Dia Max Hole, HSS, 1 Hole Sizes, 7/16 in Shank
Part #376510314
MFG #10314
Applicable Materials
Aluminum, Brass, Copper, Laminates, Plastic and Stainless Steel
Country of Origin
US
Cutting Edge Material
HSS

$79.58

 / EA