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Product Specifications:
| Item | Step Drill Bit |
| Bit Length | 3 1/2" |
| Cutting Direction | Right Hand |
| 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 |
| Drill Bit Finish | Black Oxide |
| Drill Bit Material | High Speed Steel |
| Drill Bit Sizes 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 | Black Oxide |
| Finish - Machining | Black Oxide |
| Flute Type | Straight |
| Impact Rated | No |
| Material | High Speed Steel |
| Material - Machining | High Speed Steel |
| Maximum Drilling Depth | 3.5 mm |
| Maximum Hole Size | 7/8" |
| Min. Hole Size | 3/16" |
| No. Of Pieces | 1 |
| Number Of Flutes | 2 |
| Number Of Hole Sizes | 12 |
| Number Of Pieces | 1 |
| Overall Length | 2 7/8" |
| Primary Material Application | Steel |
| Series | 331-39115 Series |
| Shank Diameter | 3/8" |
| Shank Length | 1" |
| Shank Size | 3/8" |
| Shank Type | Straight With Three Flats |
| Shank Type - Machining | Straight With Three Flats |
| Size Range | 627143 |
| Spiral Direction | Neutral |
| Step Increments | 1/16" |
| Step Thickness | 1/8" |
| System Of Measurement | Fractional Inch |
Shipping Info:
| Ship weight (kg) | 0.1 |
| Ship height (cm) | 9.4 |
| Ship length (cm) | 13.21 |
| Ship width (cm) | 9.65 |
| HS code | 8207502080 |
| Country of Origin | CN |
Product Variants
| Product | Model | Number Of Hole Sizes | Drill Bit Sizes Included | Decimal Equivalent | Maximum Hole Size | Bit Length | Step Thickness | Step Increments | Material | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
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6EXN3 | 13 | 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" | 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 | 1/2" | 3 3/8" | 1/8" | 1/32" | High Speed Steel | €35.63 | |
![]() |
6EXN5 | 10 | 1/4", 3/8", 1/2", 5/8", 3/4", 7/8", 1", 1-1/8", 1-1/4", 1-3/8" | 0.25, 0.375, 0.5, 0.625, 0.75, 0.875, 1, 1.125, 1.25, 1.375 | 1 3/8" | 3" | 1/8" | 1/16" | High Speed Steel | €197.12 | |
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6EXN6 | 3 | 1/2", 7/8", 1-1/8" | 0.5, 0.875, 1.125 | 1 1/8" | 3" | 3/8" | 3/8" | High Speed Steel | €135.19 |
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WESTWARD 6EXN4 Step Drill Bit 12 Hole 3/16-7/8 In
€86.16 /unit



