Left Hand Coil Spring

Pick up the spring and look into it.

Left hand coil spring.

If the wire is jutting out at the 9 o clock. Right hand wound rhw vs left hand wound lhw. The direction of wind of a spring can be determined by simply holding it in your hand with your fingers placed around the outside of the body and your thumb pointing straight up. Sometimes though you wouldn t want the pitch of the spring to get caught up in the pitch of the threaded mating part.

The direction of the spring wind can be easily determined by holding it in hand. If the last coil ends in the same direction that your fingers are pointing that is the hand direction of wind of the spring. For compression and extension springs. A coil spring can be wound in either a left hand or right hand direction similar to a screw type thread.

Compression springs can be left or right hand coiled. To determine the compression spring coil direction hold the compression spring with its axis on a horizontal plane. In the us most screws are right hand. If the end of the spring wire in the 9 o clock position then the spring is left hand wound.

If the last coil of the spring points in the same direction of your fingers then you are looking at the right handed spring. Pick up your spring and look into it. If it can be. In applications such as one spring operating inside an other it is necessary to coil the springs so that the helices are in opposite directions right and left.

If the direction of the coil from top to bottom can be simulated by bending the index finger of the left hand the coil is left hand wound.