STHOR Step Drill 4-12/20/32/39mm
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The STHOR step drill bit is designed for clean, progressive hole drilling in steel, stainless steel, non-ferrous metals, steel sheets, and plastics. It is suitable for trade and workshop users who need selectable diameter ranges with a titanium nitride-coated HSS 4241 construction.
Key Features
- Multi-Material Use: Designed for high-grade stainless steel, structural steel, cold-rolled steel, non-ferrous metals, steel sheets, and plastics.
- Progressive Drilling: Stepped profile supports controlled hole enlargement with clean edges and reduced burr formation.
- Self-Centering Design: Helps prevent slipping on rounded or slippery surfaces during drilling.
- Coated HSS Construction: HSS 4241 high-speed steel with titanium nitride coating supports heat dissipation when drilling hard materials.
- Tool Compatibility: Cylindrical shank with triangle toolholder type.
- Variant Options: Available in 5-rung, 9-rung, 13-rung, and 15-rung configurations.
Technical Specifications
| Parameter | Value |
| Brand | STHOR |
| Product Type | Step drill bit |
| Category | Step drill bits and sets |
| Unit Of Measure | SZT |
| Material | HSS 4241 |
| Surface Finish | Coated with titanium nitride |
| Application | Steel, stainless steel, non-ferrous metals, steel sheets, and plastics |
| Toolholder Type | Triangle |
| Shank Type | Cylindrical |
| Max. Cutting Capacity | 4 mm |
Variant Comparison
| SKU Code | Spec / Size | Graduation | Rung Quantity | Net Weight | Package Weight | Dimensions (L×W×H) | Included Quantity |
| 100017-0001 | 4, 6, 8, 10, 12 mm | 2 mm increments | 5 | 0.017 kg | 0.0200 kg | 18.0000 × 8.5000 × 2.0000 cm | 1 pc |
| 100017-0002 | 4, 6, 8, 10, 12, 14, 16, 18, 20 mm | 2 mm increments | 9 | 0.051 kg | 0.0500 kg | 18.0000 × 8.5000 × 3.0000 cm | 1 pc |
| 100017-0003 | 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32 mm | 2 mm increments | 15 | 0.164 kg | 0.1600 kg | 18.0000 × 8.5000 × 5.0000 cm | 1 pc |
| 100017-0004 | 4, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39 mm | 2 & 3 mm increments | 13 | 0.265 kg | 0.2700 kg | 18.0000 × 8.5000 × 4.5000 cm | 1 pc |
Package Contents
- 1 × selected STHOR step drill bit variant
24-Month Consumer Legal Guarantee
Consumers receive a minimum 24-month statutory legal guarantee from the date of delivery. No additional PERIPLUS commercial warranty applies unless expressly stated for this product. Mandatory national consumer rights remain fully applicable.
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| Variant | Quantity | Price | Total |
|---|---|---|---|
4-12 mm
100017-0001
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4-20 mm
100017-0002
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4-32 mm
100017-0003
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4-39 mm
100017-0004
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