The JACK JK-373 (JK-T373) is a brand-new, high-speed industrial single-needle chainstitch sewing machine designed exclusively for fast, high-volume button attachment. Engineered for light to medium-weight garments like shirts, blouses, uniforms, and jackets, it efficiently handles standard flat, round-shaped buttons with 2 or 4 holes. The machine features a highly adaptable, mechanical stitch configuration lever allowing the operator to quickly switch the stitch quantity to 8, 16, or 32 stitches per cycle depending on the required fabric thickness and security.

To maximize operational throughput and minimize material waste, the system features automated thread cutting and an automatic double-knot mechanism that securely ties off the thread on the underside of the fabric to prevent fraying or unraveling. Built for high performance on the factory floor, the complete unit includes a durable, vibration-dampening industrial sewing table, an adjustable steel H-leg stand, and an integrated direct-drive servo motor that ensures precise needle penetration, whisper-quiet operation, and significant energy savings over conventional clutch motors.