The parachute cord (also known as paracord or 550 cord) is a lightweight nylon core line originally used in riser parachute lines. These cables are now used as general purpose cables. This universal cable was used by astronauts during the 82nd Space Shuttle mission to repair the Hubble Space Telescope.
A knitted coat usually consists of 32 interlocking yarns, giving it a relatively smooth texture. Full nylon construction makes the paracord somewhat stretchy. You can contact the best paracord store to buy 550 paracord to make belts, buckles and rings.
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The current technical standards for the manufacture of ropes for use in parachutes have been published by the Parachute Industry Association. The now-defunct US military standard MIL-C-5040H requires nylon material.Similar styles of cables are made with other materials such as polyester.
Historically associated with airborne units and divisions, the paracord is not used as a rope for modern "square" parachutes. However, it continues to be used by many military units in almost any situation where light rope is needed.
Common uses include attaching gears to belts, e.g. dot straps to avoid losing small or important items, tie backpacks to vehicle carriers, attach camouflage nets to trees or vehicles, and so on.
The core thread (commonly referred to as the "tail") can also be removed when a finer cable is required, e.g. as sewing thread for repairing equipment or as fishing line in survival situations.