This V-COIL free running type S refill pack is for repairing or reinforcing an internal M 22 x 2.5 thread with an insert length of 2.5 D. Use it when the prepared STI thread and the mating screw connection require this exact designation and length.
Metric thread selection is based on nominal diameter and pitch, so both values must match the screw connection or drawing. Free running inserts are selected when normal screw running behavior is required after installation. Check the thread designation, tool stage, holder guidance, lubrication, and inspection method before work starts. This makes the refill pack specific to maintenance repair, machine service, fixture repair, and spare part restoration.
- repairing damaged internal M 22 x 2.5 threads with the V-COIL insert system
- refill stock for repairs requiring insert length 2.5 D
- free running screw assembly where no locking torque is required from the insert itself
- service work where the original screw size should remain usable after the repair
Note Use only with the correct STI tap, installation tool, and thread preparation process for M 22 x 2.5.
- insert length 2.5 D gives a clear selection reference for the required repair depth
- M 22 x 2.5 designation keeps the refill pack tied to one defined screw connection
- free running type S supports normal screw movement after correct installation
- refill pack format helps replenish inserts without duplicating tools already available in the workshop
Drawbacks
- This refill pack does not include preparation or installation tools; use a suitable V-COIL repair kit or tool set when the required tools are not already available.
- Confirm that the damaged thread is M 22 x 2.5 and that the selected insert length is 2.5 D.
- Prepare the hole according to the V-COIL repair process before inserting the wire thread insert.
- Cut the STI thread with the matching STI tap for the repair system.
- Clean the prepared thread so chips do not interfere with insert seating.
- Place the insert on the installation tool and drive it into the prepared thread.
- Remove the tang if the selected insert execution and process require that step.
- Check screw engagement by hand and inspect the repaired thread area.
- 5 pieces V-COIL free running type S inserts M 22 x 2.5 - 2.5 D
- System: V-COIL wire thread insert
- Insert execution: free running type S
- Thread system: metric thread
- Thread designation: M 22 x 2.5
- Insert length: 2.5 D
- Pack quantity: 5 pieces
- When do you choose a refill pack instead of a complete repair kit?
- Choose a refill pack when the required drills, STI taps, inserting tools, and tang tools are already available for the repair system.
- Which thread does this insert match?
- This insert matches M 22 x 2.5. Metric thread selection is based on nominal diameter and pitch, so both values must match the screw connection or drawing.
- What does free running type S mean in assembly?
- Free running type S supports normal screw movement after correct installation and does not add a locking insert function.
- Why is insert length important?
- Insert length 2.5 D affects the available thread engagement in the repaired component and must match the repair requirement.
- Where can you find V-COIL thread repair technical information?
- Use the Technical information V-COIL thread repair as PDF.
- What should be checked after installation?
- Check that the insert sits below the entry surface where required, that the screw starts smoothly, and that no chips remain in the thread.
- How do you avoid mixing metric pitches?
- Compare nominal diameter and pitch together because metric repair inserts with different pitches are not interchangeable.
- Where can you find the VÖLKEL thread repair catalog?
- Use the VC 23 catalog as PDF.
Do you need help selecting or using the product?
Use the contact form.
In this category: Thread repair
