Parachute cord
Multi-core rope originally used for parachutes / From Wikipedia, the free encyclopedia
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Parachute cord (also paracord or 550 cord when referring to type-III paracord) is a lightweight nylon kernmantle rope originally used in the suspension lines of parachutes. This cord is now used as a general purpose utility cord. This versatile cord was used by astronauts during the 82nd Space Shuttle mission to repair the Hubble Space Telescope.[1]
The braided sheath is usually made up of 32 interwoven strands,[2] giving it a relatively smooth texture. The all-nylon construction makes paracord somewhat elastic.
Current technical standards for the manufacture of cord for use in parachutes are published by the Parachute Industry Association. The now inactivated US military standard MIL-C-5040H required the material to be nylon.[3] Similar styles of cord are manufactured with other materials such as polyester.[4]