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Product Specifications:
| Item | Step Drill Bit |
| Bit Length | 3 1/8" |
| Decimal Equivalent | 0.125, 0.1563, 0.1875, 0.2188, 0.25, 0.2813, 0.3125, 0.3438, 0.375, 0.4063, 0.4375, 0.4688, 0.5 |
| Drill Bit Size Included | 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" |
| Finish | TiN Coating |
| Finish-machining | Tin |
| Impact Rated | No |
| Material | High Speed Steel |
| Material-machining | High Speed Steel |
| Max. Drilling Depth | 1/8" |
| Max. Hole Size | 1/2" |
| Measurement System | Fractional Inch |
| Min. Hole Size | 1/8" |
| No. Of Flutes | 1 |
| No. Of Hole Size | 13 |
| Number Of Hole Sizes | 13 |
| Overall Length | 3 3/16" |
| Primary Material Application | Brass, Copper, Laminate, Plastic, Steel, Wood |
| Series | UNIBIT Series |
| Shank Hex Size | 1/4" |
| Shank Size | 1/4" |
| Shank Type | Hex |
| Shank Type-machining | Hex |
| Size | 1/8" to 1/2" |
| Size Included | 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" |
| Size Range | 626798 |
| Step Increments | 1/32" |
| Step Thickness | 1/32" |
Shipping Info:
| Ship weight (kg) | 0.05 |
| Ship height (cm) | 2.03 |
| Ship length (cm) | 8.1 |
| Ship width (cm) | 7.37 |
| HS code | 8207506000 |
| Country of Origin | US |
Product Details:
- Sub-Brand: IRWIN UNIBIT
Product Variants
| Product | Model | Finish | Decimal Equivalent | Max. Drilling Depth | Size | Bit Length | Shank Size | Step Increments | Step Thickness | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
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UNIBIT 1 | Bright | 0.125, 0.1563, 0.1875, 0.2188, 0.25, 0.2813, 0.3125, 0.3438, 0.375, 0.4063, 0.4375, 0.4688, 0.5 | 1/8" | 1/8" to 1/2" | 3 1/8" | 1/4" | 1/32" | 1/32" | €45.77 | |
![]() |
UNIBIT 20 | Bright | 0.5625, 0.625, 0.6875, 0.75, 0.8125, 0.875, 0.9375, 1 | 1/8" | 9/16" to 1" | 3" | 7/16" | 1/16" | 1/8" | €94.06 | |
![]() |
UNIBIT 3 | Bright | 0.25, 0.3125, 0.375, 0.4375, 0.5, 0.5625, 0.625, 0.6875, 0.75 | 1/8" | 1/4" to 3/4" | 2 3/4" | 3/8" | 1/16" | 1/16" | €82.47 | |
![]() |
UNIBIT 2 | Bright | 0.1875, 0.25, 0.3125, 0.375, 0.4375, 0.5 | 5/16" | 3/16" to 1/2" | 3 1/8" | 1/4" | 1/16" | 1/16" | €45.77 | |
![]() |
UNIBIT 10 | Bright | - | - | 1/2" | 1 3/4" | 1/4" | - | - | €45.25 | |
![]() |
UNIBIT 11 | Bright | 0.875 | - | 7/8" | 2.593" | 3/8" | 5/32" | - | €60.33 | |
![]() |
UNIBIT 13 | Bright | 1.25 | - | 1.125" | 2 7/8" | 7/16" | 5/32" | - | €117.72 |
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IRWIN INDUSTRIAL TOOLS 15101 Tin Coated Step Drill Bit 1/8-1/2 In
€82.26 /unit
