Home » STEP DRILL 4-12/20/32/39MM
STHOR

STEP DRILL 4-12/20/32/39MM

SKU: 100017-0001
(0)
€2,65 inc. VAT
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Variants

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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

Buy in bulk

Variant Quantity Price Total
STEP DRILL 4-12/20/32/39MM
4-12MM 100017-0001
€2,65 inc. VAT
€0,00
€2,65 inc. VAT
€0,00
STEP DRILL 4-12/20/32/39MM
4-20MM 100017-0002
€3,30 inc. VAT
€0,00
€3,30 inc. VAT
€0,00
STEP DRILL 4-12/20/32/39MM
4-32MM 100017-0003
€5,60 inc. VAT
€0,00
€5,60 inc. VAT
€0,00
STEP DRILL 4-12/20/32/39MM
4-39MM 100017-0004
€9,25 inc. VAT
€0,00
€9,25 inc. VAT
€0,00
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