🧵 Lacing Cords for Aerospace, Electronics & Industrial Applications
Lacing cords (also known as lacing twines) are high-strength textile cords used to bundle, secure, and organise wire harnesses or cable assemblies—especially in aerospace, defence, electronics, and industrial applications.
They’re the cord-based alternative to lacing tapes—typically round rather than flat—and are ideal where manual bundling, tight radii, or smaller cable groups need to be tied securely.
At LacingCords.com, we supply premium Nomex®, PTFE, and polyester lacing cords manufactured by Breyden Products, Inc., a U.S. leader in braided cords and tapes trusted throughout the aerospace and defence supply chain.
⚙️ Main Uses
| Application | Description |
| Wire Harness Lacing | Used to tie and organise cables in aircraft, satellites, military vehicles, and electronics assemblies. |
| Cable Management | Keeps wiring neat, reduces chafing, and prevents vibration wear inside looms and enclosures. |
| Aerospace Wiring | Preferred in aircraft harnesses where plastic ties are avoided due to brittleness, outgassing, or non-compliance with MIL specifications. |
| Electronics Assembly | Used inside control panels and avionics bays for reliable, low-profile bundling. |
🧪 Typical Materials
| Material | Properties | Notes |
| Nomex® (Aramid) | Flame-resistant, high tensile strength, excellent heat tolerance up to ~260 °C | Common for MIL-T-43435 Type I cords |
| PTFE (Teflon®) | Chemically inert, non-stick, excellent at high temperatures | Ideal for harsh chemical or aerospace environments |
| Polyester | Economical, abrasion-resistant | Suitable for commercial or lower-temperature use |
| Nylon | Flexible and strong | Used in general industrial harnessing, not preferred for high-temp aerospace due to melting point (~220 °C) |
All Breyden cords are precision-braided, available waxed or unwaxed, and supplied on spools from 25 yds to 500 yds. Waxed cords improve handling and knot retention during manual tying.
📜 Relevant Specifications
| Spec Code | Description |
| MIL-T-43435 | Military specification covering Nomex®, PTFE, nylon, and polyester lacing cords and twines |
| ASD-EN 6049-003 | European aerospace standard for lacing cords |
| NASA-STD-8739.4 | NASA workmanship standard detailing acceptable lacing and tying methods |
| ASTM D2256 | Tensile testing standard for verifying cord performance |
🪢 Common Types
| Type | Material | Temperature Range | Colour | Specification |
| Type I | Nomex | –60 °C → +260 °C | Natural | MIL-T-43435 Type I |
| Type II | PTFE | –70 °C → +260 °C | White | MIL-T-43435 Type II |
| Type III | Nylon | –40 °C → +120 °C | Natural | MIL-T-43435 Type III |
| Type IV | Polyester | –40 °C → +150 °C | Black / Natural | Commercial Grade |
🧷 Why Use Lacing Cords Instead of Cable Ties?
| Feature | Lacing Cords | Cable Ties |
| Temperature Range | Up to 260 °C (Nomex/PTFE) | Typically ≤ 85 °C |
| Outgassing / EMI | Low / none | Some plastics off-gas under heat |
| Flexibility | Excellent on curved surfaces | Can pinch or stress insulation |
| Aesthetics | Uniform, low-profile bundles | Bulky heads, uneven spacing |
| Compliance | Aerospace & defence approved | Usually non-mil-spec |
Lacing cords offer a smooth, low-profile finish and avoid the sharp edges and plastic degradation common with ties—making them the preferred option for mission-critical wiring.
✈️ Aerospace & Defence Applications
- Aircraft harnesses for Boeing, Lockheed Martin, and Northrop Grumman
- Satellite and UAV electrical systems
- Avionics panels and cockpit assemblies
- Space-rated harnessing using PTFE or Nomex cords
💡 Selection Tips
✅ Choose Nomex for most aerospace and military projects
✅ Use PTFE for high-temperature or chemical environments
✅ Prefer waxed cords for manual lacing efficiency
✅ Verify traceability and certification (C of C, lot number, test data)
🪪 Documentation & Traceability
All Breyden lacing cords are produced under an ISO 9001:2015 and AS9100D certified quality management system.
Material certifications, test reports, and Certificates of Conformance are available on request.
🔗 Related Products
- Lacing Tapes → flat woven alternative (MIL-T-43435 also applies)
- Cable Ties → polymer equivalent for non-aerospace applications
- Heat Shrink Tubing → strain-relief companion product
- Sleeving & Looms → protection for finished harnesses
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🤝 Trusted Breyden Manufacturing
LacingCords.com proudly sources from Breyden Products Inc., an industry leader in high-performance textile cords and tapes.
Breyden’s certified quality systems and decades of experience ensure consistent, specification-compliant materials trusted in aerospace, defence, and electronics worldwide.
📞 Contact
For datasheets, specifications, or purchase enquiries,
📧 info@lacingcords.com