Viking Huskylock S21 Serger

Overlock, Coverstitch, and Chainstitch in One Machine

The Husqvarna Viking Huskylock S21 is a 2, 3, and 4-thread serger with coverstitch and chainstitch capabilities. Twenty-one stitch programs cover seaming, finishing, rolled hems, and decorative effects. Pre-programmed tension settings take the guesswork out of setup, and color-coded thread paths make threading straightforward.

21 Stitch Programs

Select your stitch and the machine sets the thread tension automatically. Options include 4-thread overlock for reinforced seams, 3-thread overlock in narrow and wide configurations, 2-thread flatlock and rolled edges, coverstitch in 3mm, 6mm, or triple widths, and chainstitch for joining layers.

Color-Coded Threading

Lay-in tension dials and color-coded thread paths guide you through setup. The automatic thread tension release loosens discs when you raise the presser foot, making it easier to pull thread into position.

Electronic Piercing Power

The machine delivers full needle penetration at any speed up to 1,100 stitches per minute. Two speed settings on the foot control let you choose between faster production work and slower precision sewing.

Differential Feed for Knits

Adjust the differential feed to prevent stretching on knits or puckering on lightweight fabrics. The feed ratio adapts to your material so seams lay flat and edges stay smooth.

Built-In Rolled Edge

Create 2 or 3-thread rolled hems without changing the presser foot or stitch plate. The built-in rolled edge function switches quickly so you can add delicate finishes to napkins, scarves, and garment edges.

Extension Table Included

The included extension table provides a larger work surface for coverstitch projects and bigger items. Extra presser foot height accommodates heavy fabrics and multiple layers.

Learn to Use the Huskylock S21

Watch our free video class covering setup, threading, and techniques:

See more from Husqvarna Viking or find additional sergers at Quality Sewing.