Proper tube preparation is essential for every successful Permaswage® installation. Before a fitting can be swaged onto tubing, technicians must verify that the fitting is fully seated on the tube. One of the most effective ways to accomplish this is by using a Permaswage® Insertion Marking Tool.
Permaswage® Insertion Marking Tools are designed to create an accurate insertion depth mark on tubing prior to fitting installation. This mark provides a visual reference that helps technicians confirm the fitting has been fully inserted before the swaging process begins.
In this guide, we'll explain what Permaswage® Insertion Marking Tools are, how they work, and provide a complete list of marking tool part numbers.
What Is a Permaswage® Insertion Marking Tool?
A Permaswage® Insertion Marking Tool is a tube preparation tool used to establish the correct fitting insertion depth prior to swaging.
The tool places a mark on the outside diameter of the tubing at the proper distance from the tube end. Once the fitting is installed, the technician can verify that the fitting has been fully seated by comparing its position to the insertion mark.
This simple process helps eliminate guesswork and improves installation consistency across multiple operators.
Why Is Tube Marking Important?
Proper fitting insertion is critical to the success of a swaged connection. If a fitting is not fully seated before swaging, the integrity of the installation may be compromised.
Using an insertion marking tool helps:
- Verify proper fitting insertion depth
- Reduce installation errors
- Improve swage consistency
- Support quality control procedures
- Reduce rework and rejected assemblies
- Improve technician confidence during installation
For aerospace fluid systems, even small installation errors can create significant maintenance and reliability issues. Proper marking helps prevent these problems before they occur.
How Permaswage® Insertion Marking Tools Work
Insertion marking is typically performed after the tube has been cut and deburred.
- Cut the tubing to the required length.
- Deburr the tube end.
- Select the correct insertion marking tool.
- Position the tool on the tubing.
- Create the insertion depth mark.
- Install the fitting onto the tube.
- Verify the fitting reaches the insertion mark.
- Perform the swage operation.
The insertion mark provides a quick visual verification that the fitting has been installed correctly before compression occurs.
Permaswage® Insertion Marking Tool Part Numbers
The following Permaswage® Insertion Marking Tools are used to establish proper fitting insertion depth prior to swaging.
| Tube Size Range | Dash Sizes | Marking Tool Part Number |
|---|---|---|
| 3/16" through 3/8" | -03 through -06 | DLT5302-013-01 |
| 1/2" through 3/4" | -08 through -12 | DLT5302-031-01 |
| 1" through 1-1/2" | -16 through -24 | DLT5302-040-01 |
Boeing Commercial Application Marking Tools
For Boeing Commercial aircraft applications, the following insertion marking tools may also be encountered:
| Part Number | Application |
|---|---|
| D12580-1 | Boeing Commercial Applications |
| D12580-2 | Boeing Commercial Applications |
| D12580-3 | Boeing Commercial Applications |
How Insertion Marking Supports Quality Control
Insertion marking is an important quality control step because it allows technicians and inspectors to verify proper fitting placement before swaging occurs.
Benefits include:
- Improved installation consistency
- Reduced technician error
- Faster installation verification
- Improved inspection processes
- Reduced rework costs
- More repeatable installation results
In aerospace manufacturing and maintenance environments, repeatability is essential. Insertion marking helps standardize the installation process and supports long-term reliability.
How Marking Tools Fit Into the Permaswage® Installation Process
Insertion marking is one of several critical steps in the complete Permaswage® installation process.
- Cut the tube using a Permaswage® Chipless Cutter.
- Deburr the tube using a Permaswage® Deburring Tool.
- Mark insertion depth using a Permaswage® Marking Tool.
- Install the fitting.
- Verify fitting position.
- Perform the swage operation.
- Inspect the completed swage using a Permaswage® Inspection Gage.
Each step works together to help ensure a reliable, leak-free fluid system connection.
Industries That Use Permaswage® Insertion Marking Tools
Permaswage® Marking Tools are commonly used throughout:
- Commercial aviation
- Military aircraft maintenance
- Aerospace manufacturing
- Helicopter maintenance facilities
- Defense contractors
- MRO organizations
- Government aviation programs
These industries rely on accurate tube preparation and installation procedures to maintain the integrity of critical fluid systems.
Commonly Requested Permaswage® Marking Tool Part Numbers
- DLT5302-013-01
- DLT5302-031-01
- DLT5302-040-01
- D12580-1
- D12580-2
- D12580-3
Why Buy Permaswage® Marking Tools from Top Flight Tools?
At Top Flight Tools, we specialize in new, surplus, and inspected Permaswage® tooling.
We help customers locate:
- Insertion Marking Tools
- Deburring Tools
- Deburring Stems
- Inspection Gages
- Chipless Cutters
- Swage Dies
- Swage Heads
- Power Units
- Tool Kits
- Field Repair Kits
Whether you're replacing a missing marking tool or building a complete Permaswage® tooling package, our team can help identify the correct tooling for your application.
Conclusion
Permaswage® Insertion Marking Tools are a simple but critical component of the tube preparation process. By establishing an accurate insertion depth reference, these tools help technicians verify proper fitting placement before swaging.
When combined with proper cutting, deburring, swaging, and inspection procedures, insertion marking tools help support reliable aerospace fluid system performance.
⚠️ Disclaimer
Top Flight Tools (TFT) is an independent reseller and is not affiliated with, sponsored by, or endorsed by Permaswage® or Precision Castparts Corp. (PCC). All product names, trademarks, and registered trademarks are the property of their respective owners. Any reference to Permaswage® products, specifications, or part numbers is provided for informational purposes only. All Permaswage® trademarks and part numbers remain the property of their respective companies.
While every effort is made to ensure the accuracy of the information provided, it is the customer’s responsibility to verify all specifications, compatibility, and suitability of products for their intended application prior to use. TFT assumes no liability for errors, omissions, or the misuse or misapplication of this information, and disclaims any responsibility for damages resulting from reliance on it.