SINGLE OR DOUBLE NEEDLE LOCKSTITCH - ISO 301

You'll find single and double needle lockstiching used throughout our product line. Lockstitching is important for workwear applications because it's somewhat 'self healing' in that if one thread is broken, the seam will not unravel. You'll find this seam used more commonly with our woven fabrics because it doesn't offer a lot of stretch, making it more suitable for woven fabrics than knits which tend to have greater stretch. 

 

 topside (when properly sewn, underside should look similar)

     

 

 TECHNICAL DETAILS
What it's called: lockstitch (single or double needle)
ISO 4915 stitch number: 301 (301-2 for double needle)
Primary use: topstitching
Spec callouts: 
  • stitches per inch

Formed by: a needle passing through the fabric and meeting with a bobbin thread on the underside. When properly tensioned, the needle and bobbin threads should meet in the center of the fabric.