A stitch formed by interlocking needle threads with a bobbin thread. This is the most common stitch formed on industrial sewing machines.

(301 Stitch): A stitch that is formed with a needle thread and a bobbin thread that are inter-locked in the center of the seam being sewn. Even though the same amounts of needle and bobbin thread are consumed, the needle thread requires 5 to 7 times more tension than the bobbin thread. Some of the advantages of using a lockstitch in a seam include: the stitch is reversible, produces the tightest of all seams, uses the least amount of thread, can be used on multi-directional automated sewing machines, has a low seam profile.

a sewing technique in which each stitch contains a loop and overthread for a non-raveling flexible seam.