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Product Specifications:
| Item | Step Drill Bit |
| Bit Length | 3 1/4" |
| Decimal Equivalent | 0.1875, 0.25, 0.3125, 0.375, 0.4375, 0.5, 0.5625, 0.625, 0.6875, 0.75, 0.8125, 0.875 |
| Design | Ensures True Starts Without Walking Even On Curved Surfaces |
| Drill Bit Size Included | 3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8" |
| Finish | Bright |
| Finish-machining | Black Oxide |
| Impact Rated | No |
| Material | High Speed Steel |
| Material-machining | High Speed Steel |
| Max. Drilling Depth | 1/8" |
| Max. Hole Size | 7/8" |
| Measurement System | Fractional Inch |
| Min. Hole Size | 3/16" |
| No. Of Flutes | 1 |
| No. Of Hole Size | 12 |
| Number Of Hole Sizes | 12 |
| Overall Length | 2 7/8" |
| Primary Material Application | Aluminum, Brass, Copper, Laminate, Plastic, Steel, Wood |
| Series | UNIBIT Series |
| Shank Dia. | 3/8" |
| Shank Type | Hex |
| Shank Type-machining | Straight With Three Flats |
| Size | 3/16" to 7/8" |
| Size Included | 3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8" |
| Size Range | 627143 |
| Step Increments | 1/16" |
| Step Thickness | 1/16" |
Shipping Info:
| Ship weight (kg) | 0.09 |
| Ship height (cm) | 2.79 |
| Ship length (cm) | 7.3 |
| Ship width (cm) | 7.37 |
| HS code | 8207506000 |
| Country of Origin | US |
Product Details:
- Sub-Brand: IRWIN UNIBIT
Product Variants
| Product | Model | No. Of Hole Size | Max. Hole Size | Min. Hole Size | Drill Bit Size Included | Finish-machining | Shank Type-machining | Finish | Size | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
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UNIBIT 1 | 13 | 1/2" | 1/8" | 1/8", 5/32", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 13/32", 7/16", 15/32", 1/2" | Black Oxide | Hex | Bright | 1/8" to 1/2" | €45.77 | |
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UNIBIT 20 | 8 | 1" | 9/16" | 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16", 1" | Black Oxide | Straight With Three Flats | Bright | 9/16" to 1" | €94.06 | |
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UNIBIT 3 | 9 | 3/4" | 1/4" | 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4" | Black Oxide | Straight With Three Flats | Bright | 1/4" to 3/4" | €82.47 | |
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UNIBIT 2 | 6 | 1/2" | 3/16" | 3/16", 1/4", 5/16", 3/8", 7/16", 1/2" | Black Oxide | Hex | Bright | 3/16" to 1/2" | €45.77 | |
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UNIBIT 10 | 1 | - | - | - | - | - | Bright | 1/2" | €45.25 | |
![]() |
UNIBIT 11 | 1 | 7/8" | 7/8" | 7/8" | Black Oxide | Straight With Three Flats | Bright | 7/8" | €60.33 | |
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UNIBIT 13 | 1 | 1 1/8" | 1 1/8" | 1 1/8" | Black Oxide | Straight With Three Flats | Bright | 1.125" | €117.72 |
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Contact us
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IRWIN INDUSTRIAL TOOLS UNIBIT 4 Hss Step Drill Bit 3/16-7/8 Inch Step 1/16
€105.17 /unit
