<script> Artikeldetails Coil-Repair Set HSS M 2
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Coil-Repair Set HSS M 2

34,50€
incl. VAT, excl. shipping cost
in stock
Delivery time (DE): 2-3 business days

Art.-Nr.: B00860080
 EAN: 4014176608140
Product description

The GSR Coilrepair Set M2 is the compact all-in-one solution for repairing damaged M2 internal threads. With a single set and in just a few steps, worn or stripped threads are permanently restored to their original nominal dimension – without replacing the component and without enlarging the thread. The system is particularly well-suited for materials with low shear strength such as aluminium or magnesium alloys, where damaged threads are a common occurrence. All necessary system tools are included in the set.

The thread inserts consist of austenitic stainless steel wire with a diamond-shaped cross-section (rhombus, 60°), cold-formed into a spring coil. This cross-section creates a precise, double-sided usable thread flank with high surface quality. The spring design distributes applied forces evenly across all thread turns – the result is a wear-resistant connection with consistently low thread friction torque, even under frequent repeated assembly cycles.

Set Contents – 19 pieces:

  • 15 × Thread insert M2×0.4, length 1.5×d, corrosion-resistant and heat-resistant, diamond-shaped cross-section
  • 1 × Core hole drill Ø 2.1 mm HSSG, DIN 338, vapour-treated and nitrided
  • 1 × STI tap M2 HSSG, ISO 529 Form D, 6H
  • 1 × Installation tool, tool steel, powder-coated
  • 1 × Tang break-off tool
  • 1 × Plastic case with foam insert

Technical Data:

Article No.B00860080
EAN4014176608140
Thread sizeM 2
Thread pitch0.4 mm
Core hole drillØ 2.1 mm HSSG, DIN 338, cross-point grind DIN 1412 C, vapour-treated and nitrided
STI tapM2 HSSG, ISO 529 Form D (medium chamfer), 6H
Insert thread standardDIN 8140
Thread insert length1.5×d
Thread insert cross-sectionDiamond-shaped (rhombus, 60°)
Thread insert materialCorrosion-resistant and heat-resistant
No. of thread inserts15
Installation toolTool steel, ergonomic powder-coated handle, knurled adjusting nut
No. of parts19
ManufacturerGSR Gustav Stursberg GmbH, Remscheid, Germany
  • Repair damaged threads without changing the nominal dimension
  • Reinforce threads through thread reinforcement (thread armour)
  • High-strength, cost-effective and easy-to-install solution
  • Thread inserts corrosion-resistant and heat-resistant
  • Diamond-shaped cross-section (rhombus, 60°) – spring coil for even load distribution
  • STI tap to ISO 529, Form D – suitable for through-holes and blind holes
  • Core hole drill to DIN 338, vapour-treated and nitrided
  • Installation tool with ergonomic powder-coated handle and knurled adjusting nut
  • All tools included in the set – ready to use immediately
  • Mechanical engineering and maintenance: Repair of damaged threaded holes in machine frames, housings and assemblies
  • Automotive and engine technology: Restoration of threaded holes in aluminium engine parts, gearbox housings and body components
  • Electronics manufacturing and precision mechanics: Repair of small internal threads in sensitive assemblies and precision equipment
  • Aerospace: Thread restoration in lightweight structures made of aluminium and magnesium alloys
  • Trade and workshop: Wherever damaged threads need to be repaired quickly and without replacing the component
  • Model making and precision engineering: Reliable repair of the finest M2 threads in small components

For thread repair you will need a core hole drill, STI tap, installation tool, tang break-off tool as well as a drilling machine or adjustable tap wrench and a hammer (optional: countersink).

  1. Drill out the damaged thread
  2. Countersink the core hole edge
  3. Drill new core hole for insert thread
  4. Cut new thread with STI tap
  5. Place the thread insert onto the installation tool
  6. Wind the thread insert into the thread
  7. Break off the tang with the tang break-off tool
  8. Repaired thread

Detailed information on the GSR Coilrepair system, correct application, core hole dimensions and installation values can be found in GSR Update No. 21 and the GSR Thread Repair Handbook.

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