MIL-C-87129 Type I, II, III, IV, V, VI, VII, VIII, IX, X aramid braided cord

The MIL-C-87129 specification covers coreless braided cord made from aramid fibres for military, parachute and aerospace applications. Aramid construction provides a high strength-to-weight ratio and low elongation compared with conventional nylon cordage.
The MIL-C-87129 reference is also encountered alongside later industry documents such as PIA-C-87129.

Construction

MIL-C-87129 cord is made from braided aramid fibres, commonly associated with materials such as Kevlar®.
Key characteristics include:

• high tensile strength,
• low elongation under load,
• heat resistance,
• low linear mass,
• dimensional stability in demanding environments.
  The coreless construction distributes load through the braided structure without a separate central core.

  Applications

  Typical uses include:

• military parachute systems,
• cargo parachutes,
• aerospace equipment,
• recovery systems,
• space applications,
• safety systems,
• high-temperature industrial applications.

  MIL-C-87129 vs MIL-C-7515

  MIL-C-87129 uses low-elongation aramid fibres for applications where strength-to-weight ratio and dimensional stability are important. MIL-C-7515 covers nylon braided cord for applications where different dynamic behaviour is required.