When sourcing lacing cords for military applications, understanding the key MIL-SPEC standards is essential. This guide covers the most important specifications, their requirements, and how to select the right cord for your program.
Key Military Specifications
MIL-T-43435 — The Primary Standard
MIL-T-43435 is the primary specification for nylon lacing tape and cord used in military wire harness assembly. It covers two types:
- Type I: Round braided nylon cord, minimum 100 lb tensile strength
- Type II: Flat braided nylon tape, used for flat cable bundles
MS3367 — Nylon Lacing Straps
MS3367 covers nylon lacing straps specifically for securing wire bundles in military aircraft. Often used in avionics bays where regular cord would be difficult to apply.
How to Order MIL-SPEC Lacing Cord
Always request a Certificate of Conformance (C of C) from your supplier confirming the lot meets specification requirements. For critical military programs, source from qualified suppliers on the Qualified Products List (QPL).