Step Drill Bit
Step Drill Bit is a specialized drilling tool for creating multiple hole sizes with a single bit. Made of M35 HSS-Co (5% Cobalt) with TiN gold or TiAlN dark grey coating for extended tool life. Features 75° helix angle, 118° X-type split point for self-centering, and chip breaker to prevent metal splash. Available in hex or 3-flat shank, straight or spiral flute. Ideal for sheet metal, aluminum, and plastic.
Unit Price:
4.86 USDShips from China warehouse
Ships from China warehouse
Volume Discount
Order Value
1000 + USD
Discount
3% off
Order Value
3000 + USD
Discount
5% off
Order Value
8000 + USD
Discount
8% off
Order Value
15000 + USD
Discount
12% off
Order Value
30000 + USD
Discount
15% off
Order Value
50000 + USD
Discount
18% off
Discounts are automatically applied at checkout based on order value.
Available Warehouse
🇨🇳
China Factory
Stock & Production Available
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Specifications
| Cart+ | SKU | Price | Quantity | Total | Shank Type | Flute Type | Drilling Range | Number of Steps | Dia of Steps | Overall Length | Shank Dia |
|---|---|---|---|---|---|---|---|---|---|---|---|
SDB-HT-4-12-5 | $4.86 | $0 | Hex | Straight | 4-12 mm | 5 | 4-6-8-10-12 mm | 65 mm | 6 mm | ||
SDB-HS-4-12-5 | $4.86 | $0 | Hex | Spiral | 4-12 mm | 5 | 4-6-8-10-12 mm | 65 mm | 6 mm | ||
SDB-FT-4-12-5 | $4.86 | $0 | 3-Flat | Straight | 4-12 mm | 5 | 4-6-8-10-12 mm | 65 mm | 6 mm | ||
SDB-FS-4-12-5 | $4.86 | $0 | 3-Flat | Spiral | 4-12 mm | 5 | 4-6-8-10-12 mm | 65 mm | 6 mm | ||
SDB-HT-4-12-9 | $5.29 | $0 | Hex | Straight | 4-12 mm | 9 | 4-5-6-7-8-9-10-11-12 mm | 65 mm | 6 mm | ||
SDB-HS-4-12-9 | $5.29 | $0 | Hex | Spiral | 4-12 mm | 9 | 4-5-6-7-8-9-10-11-12 mm | 65 mm | 6 mm | ||
SDB-FT-4-12-9 | $5.29 | $0 | 3-Flat | Straight | 4-12 mm | 9 | 4-5-6-7-8-9-10-11-12 mm | 65 mm | 6 mm | ||
SDB-FS-4-12-9 | $5.29 | $0 | 3-Flat | Spiral | 4-12 mm | 9 | 4-5-6-7-8-9-10-11-12 mm | 65 mm | 6 mm | ||
SDB-HT-4-20-9 | $9.09 | $0 | Hex | Straight | 4-20 mm | 9 | 4-6-8-10-12-14-16-18-20 mm | 75 mm | 8 mm | ||
SDB-HS-4-20-9 | $9.09 | $0 | Hex | Spiral | 4-20 mm | 9 | 4-6-8-10-12-14-16-18-20 mm | 75 mm | 8 mm | ||
SDB-FT-4-20-9 | $9.09 | $0 | 3-Flat | Straight | 4-20 mm | 9 | 4-6-8-10-12-14-16-18-20 mm | 75 mm | 8 mm | ||
SDB-FS-4-20-9 | $9.09 | $0 | 3-Flat | Spiral | 4-20 mm | 9 | 4-6-8-10-12-14-16-18-20 mm | 75 mm | 8 mm | ||
SDB-HT-4-22-10 | $11.62 | $0 | Hex | Straight | 4-22 mm | 10 | 4-6-8-10-12-14-16-18-20-22 mm | 80 mm | 10 mm | ||
SDB-HS-4-22-10 | $11.62 | $0 | Hex | Spiral | 4-22 mm | 10 | 4-6-8-10-12-14-16-18-20-22 mm | 80 mm | 10 mm | ||
SDB-FT-4-22-10 | $11.62 | $0 | 3-Flat | Straight | 4-22 mm | 10 | 4-6-8-10-12-14-16-18-20-22 mm | 80 mm | 10 mm | ||
SDB-FS-4-22-10 | $11.62 | $0 | 3-Flat | Spiral | 4-22 mm | 10 | 4-6-8-10-12-14-16-18-20-22 mm | 80 mm | 10 mm | ||
SDB-HT-4-30-14 | $20.71 | $0 | Hex | Straight | 4-30 mm | 14 | 4-6-8-10-12-14-16-18-20-22-24-26-28-30 mm | 100 mm | 10 mm | ||
SDB-HS-4-30-14 | $20.71 | $0 | Hex | Spiral | 4-30 mm | 14 | 4-6-8-10-12-14-16-18-20-22-24-26-28-30 mm | 100 mm | 10 mm | ||
SDB-FT-4-30-14 | $20.71 | $0 | 3-Flat | Straight | 4-30 mm | 14 | 4-6-8-10-12-14-16-18-20-22-24-26-28-30 mm | 100 mm | 10 mm | ||
SDB-FS-4-30-14 | $20.71 | $0 | 3-Flat | Spiral | 4-30 mm | 14 | 4-6-8-10-12-14-16-18-20-22-24-26-28-30 mm | 100 mm | 10 mm | ||
SDB-HT-5-35-13 | $30.22 | $0 | Hex | Straight | 5-35 mm | 13 | 5-13-15-17-19-21-23-25-27-29-31-33-35 mm | 82 mm | 12.7 mm | ||
SDB-HS-5-35-13 | $30.22 | $0 | Hex | Spiral | 5-35 mm | 13 | 5-13-15-17-19-21-23-25-27-29-31-33-35 mm | 82 mm | 12.7 mm | ||
SDB-FT-5-35-13 | $30.22 | $0 | 3-Flat | Straight | 5-35 mm | 13 | 5-13-15-17-19-21-23-25-27-29-31-33-35 mm | 82 mm | 12.7 mm | ||
SDB-FS-5-35-13 | $30.22 | $0 | 3-Flat | Spiral | 5-35 mm | 13 | 5-13-15-17-19-21-23-25-27-29-31-33-35 mm | 82 mm | 12.7 mm | ||
SDB-HT-6-20-8 | $9.09 | $0 | Hex | Straight | 6-20 mm | 8 | 6-8-10-12-14-16-18-20 mm | 71 mm | 9 mm | ||
SDB-HS-6-20-8 | $9.09 | $0 | Hex | Spiral | 6-20 mm | 8 | 6-8-10-12-14-16-18-20 mm | 71 mm | 9 mm | ||
SDB-FT-6-20-8 | $9.09 | $0 | 3-Flat | Straight | 6-20 mm | 8 | 6-8-10-12-14-16-18-20 mm | 71 mm | 9 mm | ||
SDB-FS-6-20-8 | $9.09 | $0 | 3-Flat | Spiral | 6-20 mm | 8 | 6-8-10-12-14-16-18-20 mm | 71 mm | 9 mm | ||
SDB-HT-6-30-13 | $20.71 | $0 | Hex | Straight | 6-30 mm | 13 | 6-8-10-12-14-16-20-22-24-26-28-30 mm | 100 mm | 10 mm | ||
SDB-HS-6-30-13 | $20.71 | $0 | Hex | Spiral | 6-30 mm | 13 | 6-8-10-12-14-16-20-22-24-26-28-30 mm | 100 mm | 10 mm | ||
SDB-FT-6-30-13 | $20.71 | $0 | 3-Flat | Straight | 6-30 mm | 13 | 6-8-10-12-14-16-20-22-24-26-28-30 mm | 100 mm | 10 mm | ||
SDB-FS-6-30-13 | $20.71 | $0 | 3-Flat | Spiral | 6-30 mm | 13 | 6-8-10-12-14-16-20-22-24-26-28-30 mm | 100 mm | 10 mm | ||
SDB-HT-6-38-12 | $33.81 | $0 | Hex | Straight | 6-38 mm | 12 | 6-9-13-16-19-21-23-26-29-32-35-38 mm | 100 mm | 10 mm | ||
SDB-HS-6-38-12 | $33.81 | $0 | Hex | Spiral | 6-38 mm | 12 | 6-9-13-16-19-21-23-26-29-32-35-38 mm | 100 mm | 10 mm | ||
SDB-FT-6-38-12 | $33.81 | $0 | 3-Flat | Straight | 6-38 mm | 12 | 6-9-13-16-19-21-23-26-29-32-35-38 mm | 100 mm | 10 mm | ||
SDB-FS-6-38-12 | $33.81 | $0 | 3-Flat | Spiral | 6-38 mm | 12 | 6-9-13-16-19-21-23-26-29-32-35-38 mm | 100 mm | 10 mm | ||
SDB-HT-9-36-10 | $24.09 | $0 | Hex | Straight | 9-36 mm | 10 | 9-12-15-18-21-24-27-30-33-36 mm | 85 mm | 12 mm | ||
SDB-HS-9-36-10 | $24.09 | $0 | Hex | Spiral | 9-36 mm | 10 | 9-12-15-18-21-24-27-30-33-36 mm | 85 mm | 12 mm | ||
SDB-FT-9-36-10 | $24.09 | $0 | 3-Flat | Straight | 9-36 mm | 10 | 9-12-15-18-21-24-27-30-33-36 mm | 85 mm | 12 mm | ||
SDB-FS-9-36-10 | $24.09 | $0 | 3-Flat | Spiral | 9-36 mm | 10 | 9-12-15-18-21-24-27-30-33-36 mm | 85 mm | 12 mm | ||
SDB-HT-10-20-11 | $14.37 | $0 | Hex | Straight | 10-20 mm | 11 | 10-11-12-13-14-15-16-17-18-19-20 mm | 85 mm | 10 mm | ||
SDB-HS-10-20-11 | $14.37 | $0 | Hex | Spiral | 10-20 mm | 11 | 10-11-12-13-14-15-16-17-18-19-20 mm | 85 mm | 10 mm | ||
SDB-FT-10-20-11 | $14.37 | $0 | 3-Flat | Straight | 10-20 mm | 11 | 10-11-12-13-14-15-16-17-18-19-20 mm | 85 mm | 10 mm | ||
SDB-FS-10-20-11 | $14.37 | $0 | 3-Flat | Spiral | 10-20 mm | 11 | 10-11-12-13-14-15-16-17-18-19-20 mm | 85 mm | 10 mm | ||
SDB-HT-20-30-11 | $32.33 | $0 | Hex | Straight | 20-30 mm | 11 | 20-21-22-23-24-25-26-27-28-29-30 mm | 86 mm | 13 mm | ||
SDB-HS-20-30-11 | $32.33 | $0 | Hex | Spiral | 20-30 mm | 11 | 20-21-22-23-24-25-26-27-28-29-30 mm | 86 mm | 13 mm | ||
SDB-FT-20-30-11 | $32.33 | $0 | 3-Flat | Straight | 20-30 mm | 11 | 20-21-22-23-24-25-26-27-28-29-30 mm | 86 mm | 13 mm | ||
SDB-FS-20-30-11 | $32.33 | $0 | 3-Flat | Spiral | 20-30 mm | 11 | 20-21-22-23-24-25-26-27-28-29-30 mm | 86 mm | 13 mm | ||
SDB-HT-1/8-1/2-13 | $6.34 | $0 | Hex | Straight | 1/8"-1/2" | 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" | 3 1/8" | 1/4" | ||
SDB-HS-1/8-1/2-13 | $6.34 | $0 | Hex | Spiral | 1/8"-1/2" | 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" | 3 1/8" | 1/4" | ||
SDB-FT-1/8-1/2-13 | $6.34 | $0 | 3-Flat | Straight | 1/8"-1/2" | 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" | 3 1/8" | 1/4" | ||
SDB-FS-1/8-1/2-13 | $6.34 | $0 | 3-Flat | Spiral | 1/8"-1/2" | 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" | 3 1/8" | 1/4" | ||
SDB-HT-3/16-1/2-6 | $5.08 | $0 | Hex | Straight | 3/16"-1/2" | 6 | 3/16-1/4-5/16-3/8-7/16-1/2" | 3 1/4" | 1/4" | ||
SDB-HS-3/16-1/2-6 | $5.08 | $0 | Hex | Spiral | 3/16"-1/2" | 6 | 3/16-1/4-5/16-3/8-7/16-1/2" | 3 1/4" | 1/4" | ||
SDB-FT-3/16-1/2-6 | $5.08 | $0 | 3-Flat | Straight | 3/16"-1/2" | 6 | 3/16-1/4-5/16-3/8-7/16-1/2" | 3 1/4" | 1/4" | ||
SDB-FS-3/16-1/2-6 | $5.08 | $0 | 3-Flat | Spiral | 3/16"-1/2" | 6 | 3/16-1/4-5/16-3/8-7/16-1/2" | 3 1/4" | 1/4" | ||
SDB-HT-3/16-7/8-12 | $12.05 | $0 | Hex | Straight | 3/16"-7/8" | 12 | 3/16-1/4-5/16-3/8-7/16-1/2-9/16-5/8-11/16-3/4-13/16-7/8" | 3 1/4" | 3/8" | ||
SDB-HS-3/16-7/8-12 | $12.05 | $0 | Hex | Spiral | 3/16"-7/8" | 12 | 3/16-1/4-5/16-3/8-7/16-1/2-9/16-5/8-11/16-3/4-13/16-7/8" | 3 1/4" | 3/8" | ||
SDB-FT-3/16-7/8-12 | $12.05 | $0 | 3-Flat | Straight | 3/16"-7/8" | 12 | 3/16-1/4-5/16-3/8-7/16-1/2-9/16-5/8-11/16-3/4-13/16-7/8" | 3 1/4" | 3/8" | ||
SDB-FS-3/16-7/8-12 | $12.05 | $0 | 3-Flat | Spiral | 3/16"-7/8" | 12 | 3/16-1/4-5/16-3/8-7/16-1/2-9/16-5/8-11/16-3/4-13/16-7/8" | 3 1/4" | 3/8" | ||
SDB-HT-1/4-3/4-9 | $9.09 | $0 | Hex | Straight | 1/4"-3/4" | 9 | 1/4-5/16-3/8-7/16-1/2-9/16-5/8-11/16-3/4" | 2 3/4" | 3/8" | ||
SDB-HS-1/4-3/4-9 | $9.09 | $0 | Hex | Spiral | 1/4"-3/4" | 9 | 1/4-5/16-3/8-7/16-1/2-9/16-5/8-11/16-3/4" | 2 3/4" | 3/8" | ||
SDB-FT-1/4-3/4-9 | $9.09 | $0 | 3-Flat | Straight | 1/4"-3/4" | 9 | 1/4-5/16-3/8-7/16-1/2-9/16-5/8-11/16-3/4" | 2 3/4" | 3/8" | ||
SDB-FS-1/4-3/4-9 | $9.09 | $0 | 3-Flat | Spiral | 1/4"-3/4" | 9 | 1/4-5/16-3/8-7/16-1/2-9/16-5/8-11/16-3/4" | 2 3/4" | 3/8" | ||
SDB-HT-1/4-1-3/8-10 | $22.82 | $0 | Hex | Straight | 1/4"-1 3/8" | 10 | 1/4-3/8-1/2-5/8-3/4-7/8-1 1/8-1 7/32-1 1/4-1 3/8" | 3 1/8" | 1/2" | ||
SDB-HS-1/4-1-3/8-10 | $22.82 | $0 | Hex | Spiral | 1/4"-1 3/8" | 10 | 1/4-3/8-1/2-5/8-3/4-7/8-1 1/8-1 7/32-1 1/4-1 3/8" | 3 1/8" | 1/2" | ||
SDB-FT-1/4-1-3/8-10 | $22.82 | $0 | 3-Flat | Straight | 1/4"-1 3/8" | 10 | 1/4-3/8-1/2-5/8-3/4-7/8-1 1/8-1 7/32-1 1/4-1 3/8" | 3 1/8" | 1/2" | ||
SDB-FS-1/4-1-3/8-10 | $22.82 | $0 | 3-Flat | Spiral | 1/4"-1 3/8" | 10 | 1/4-3/8-1/2-5/8-3/4-7/8-1 1/8-1 7/32-1 1/4-1 3/8" | 3 1/8" | 1/2" |
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Features
Key product features and specifications that make this product stand out.
M35 HSS-Co (5% Cobalt) superior heat resistance
Straight flute: TiN gold coated with 2 flutes
Spiral flute: TiAlN coated (dark grey), 4 flutes
Hex shank or 3-flat shank anti-slip grip design
75° helix angle for smoother and faster chip removal
Sharp tip cutting edge without burrs, clean cuts
118° X-type split point with self-centering design
Prevents walking and clears chips/particles faster
Chip breaker prevents metal splash effectively
Laser etched size markings won't wear after use
Metric 4-38 mm / Imperial 1/8"-1-3/8" size range
Ideal for sheet metal, aluminum, plastic materials
Custom: M42, 6542, 9341 HSS materials on request
Custom: various flute counts (2,3,4) on request
