Irwin Tools IRWIN Unibit #21 13/16-Inch to 1-3/8-Inch Step-Drill Bit, 1/2-Inch Shank (10221), Black
IRWIN Unibit #21 step-drill bit (10221) enlarges holes 13/16"–1-3/8" in thin materials; single-flute design for clean, true round holes, 3-flat 1/2" shank prevents slipping, limited lifetime warranty.
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UOM Quantity
1 Available Quantity
0 GSA Compliant
Yes Product Details
Single-flute cutting edge for greater control through steps. Pilot hole required. Also available with titanium nitride coating for longer life. Patented single-flute cutting edge gives the user a true round hole every time. Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates. 3 flatted shank prevents slipping in drill chuck. Irwin Unibit #21 step drill bit (10221) offers 10 hole sizes (13/16" - 1-3/8") in 1/16" increments and a 1/2" shank for secure chucking. Finish: Brushed. Material: Blend. Limited Lifetime Warranty.
- Hole enlarging: Suitable for 13/16-inch to 1-3/8-inch diameter holes in thin materials
- Material compatibility: Ideal for drilling holes in metal, plastic, and laminates
- Cutting edge: Single-flute design, ensures true round hole in thin materials
- Shank type: 3-Flat, 1/2-inch diameter, prevents slipping in drill chuck
- Step drill #21: 13/16-inch to 1-3/8-inch capacity, 10 size options
Specifications
Materials & Construction
- Color:Multi
- Outer Material:Blend
Product Details
- Cutting Angle String:135 Degrees
- Cutting Diameter:1.38 Inches
- Finish Type:Brushed
- Material:Blend
- Number of Flutes:1
- Number of Pieces:10
- Set Name:Single Piece Set
- Shank Type:3-Flat
- Surface Recommendation:Aluminum,Brass,Copper,Metal,Plastic,Stainless Steel,Steel,Wood
- Tool Flute Type:Straight
- Unit Count:1.0 Count
Sizing & Dimensions
- Height:1.25 inches
- Length:6 inches
- Product Dimensions:6 x 3 x 1.25 inches
- Size:One Size
- Weight:1.59 ounces
- Width:3 inches
Technical Specifications
- Included Components:STEP DRILL #21 13/16-1-3/8IN 10 SZ
- Measurement System:Inch
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