Stitch Type

Stitches: Class-304 (Sub-Classes)

Stitch Class 304 (zig zag): The 304 stitch formation is commonly referred to as the zig-zag Lockstitch with a needle and bobbin thread that are set in the center of the seam. To produce the zig-zag appearance, the needle bar moves laterally as the material is fed creating a symmetrical zig zag pattern. Also used for bartacking, lockstitch button sewing and button holing. Thread consumption ratio=1: 5.5

Stitch type 304

This type of stitch is formed with 2 threads:

1 Needle thread (A) 1 Bobbin thread (B)

The loop of thread (A) is passed through the material and inter-laced with thread (B). Thread (A) is then pulled back so that the inter-lacing is midway between surfaces of the material or materials being sewn.

Ideally, this stitch should have a 1 : 1 ratio of needle to bobbin thread.

Face Side

Underside