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Cross-section view of a V-COIL wire thread insert installed in a workpiece, demonstrating the thread repair.
V-COIL rapid

V-COIL rapid STI-Twist Drill, 10.3 mm

Item no. 03471

€6.70

in stock - more than 100 pieces available
Application
V-COIL rapid STI Twist Drill 10.3 mm – For Core Hole Enlargement

V-COIL rapid STI Twist Drill 10.3 mm

The V-COIL rapid STI Twist Drill 10.3 mm is specifically designed for enlarging the core hole of worn or damaged internal threads. Thanks to its 1/4'' hex shank, the tool is perfectly suited for manual use or operation with a cordless drill.

Its compact size makes it extremely easy to handle, ideal for tight or hard-to-reach areas, and much smaller and more flexible than traditional repair systems.

The tool is also included in various V-COIL sets and assortments.

Applications
  • Core hole enlargement of worn or damaged threads
  • Compatible with V-COIL sets and assortments
  • Suitable for manual tools and cordless drills
  • Ideal for narrow or hard-to-reach areas

Advantages & Features
  • High application flexibility
  • With 1/4'' hex shank
  • Can be used manually or with cordless drills
  • Very compact – ideal for tight spaces
  • Smaller and more efficient than traditional repair systems

Step-by-Step Instructions
  1. 1. Preparation: Clean the damaged thread hole.
  2. 2. Alignment: Position the twist drill vertically.
  3. 3. Drilling: Drill steadily using manual or cordless tools.
  4. 4. Inspection: Check the enlarged core hole.

Technical Data
  • Diameter: 10.3 mm
  • Drive: 1/4'' hex shank
  • Article Number: 03471
  • EAN: 4022835034711
  • Application: Core hole enlargement for worn threads

Scope of Delivery
  • 1 × V-COIL rapid STI Twist Drill 10.3 mm (Art. 03471)

FAQ – Frequently Asked Questions

What is the twist drill used for?
It is used to precisely enlarge the core hole of a worn thread, preparing it for cutting a new STI thread insert.

Does it fit cordless drills?
Yes, the 1/4'' hex shank fits all standard cordless drills and quick-change chucks.

Is it suitable for tight spaces?
Absolutely – the compact design allows use where conventional drills cannot reach.

Can it be used manually?
Yes, its size and hex shank make it ideal for careful manual drilling.

Is it included in V-COIL sets?
Yes, it is included in several V-COIL repair kits and assortments.

How do I know the core hole has the correct size?
The diameter must match the STI core hole size. Measuring tools or a test-fit with an STI tap help verify accuracy.

Do you have questions or need assistance? Use our contact form to submit a non-binding inquiry.

Additional information
Size D 10.3 mm
Overall length (L1) 50 mm
Length (S2) 35 mm
Drive connector Hexagon 1/4" inch
EAN 4022835034711
Item number 03471
V-COIL rapid STI Twist Drill 10.3 mm – For Core Hole Enlargement

V-COIL rapid STI Twist Drill 10.3 mm

The V-COIL rapid STI Twist Drill 10.3 mm is specifically designed for enlarging the core hole of worn or damaged internal threads. Thanks to its 1/4'' hex shank, the tool is perfectly suited for manual use or operation with a cordless drill.

Its compact size makes it extremely easy to handle, ideal for tight or hard-to-reach areas, and much smaller and more flexible than traditional repair systems.

The tool is also included in various V-COIL sets and assortments.

Applications
  • Core hole enlargement of worn or damaged threads
  • Compatible with V-COIL sets and assortments
  • Suitable for manual tools and cordless drills
  • Ideal for narrow or hard-to-reach areas

Advantages & Features
  • High application flexibility
  • With 1/4'' hex shank
  • Can be used manually or with cordless drills
  • Very compact – ideal for tight spaces
  • Smaller and more efficient than traditional repair systems

Step-by-Step Instructions
  1. 1. Preparation: Clean the damaged thread hole.
  2. 2. Alignment: Position the twist drill vertically.
  3. 3. Drilling: Drill steadily using manual or cordless tools.
  4. 4. Inspection: Check the enlarged core hole.

Technical Data
  • Diameter: 10.3 mm
  • Drive: 1/4'' hex shank
  • Article Number: 03471
  • EAN: 4022835034711
  • Application: Core hole enlargement for worn threads

Scope of Delivery
  • 1 × V-COIL rapid STI Twist Drill 10.3 mm (Art. 03471)

FAQ – Frequently Asked Questions

What is the twist drill used for?
It is used to precisely enlarge the core hole of a worn thread, preparing it for cutting a new STI thread insert.

Does it fit cordless drills?
Yes, the 1/4'' hex shank fits all standard cordless drills and quick-change chucks.

Is it suitable for tight spaces?
Absolutely – the compact design allows use where conventional drills cannot reach.

Can it be used manually?
Yes, its size and hex shank make it ideal for careful manual drilling.

Is it included in V-COIL sets?
Yes, it is included in several V-COIL repair kits and assortments.

How do I know the core hole has the correct size?
The diameter must match the STI core hole size. Measuring tools or a test-fit with an STI tap help verify accuracy.

Do you have questions or need assistance? Use our contact form to submit a non-binding inquiry.

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