Industrial sewing machine needles SCHMETZ DBx1 (1738) SPI SERV 7 for dense and thin fabrics - 10 pcs.

SCHMETZ DBx1 SPI SERV 7 Industrial sewing machine needles are designed specifically for precise sewing with lockstitch sewing machines.
SPI or “Acute Round Point” tip is very sharp and narrow, allowing easy and precise penetration of dense, thin, or coated fabrics without damaging fibers and ensuring a perfect stitch without fabric puckering or wrinkling.
The special geometry of SERV 7 makes the needle stiffer and more stable, reducing skipped stitches and providing reliable results even on challenging materials.

🧵 Most suitable materials

• Very densely woven fabrics – microfiber, silk

• Thin, coated fabrics (e.g., technical coatings)

• Smooth, thin materials – for example, taffeta

• Decorative stitches on shirt collars and cuffs (topstitch)

• Uncovered elastic threads (e.g., spandex without cover)

• Fur and leather garment manufacturing

🎯 Features

• Designed for lockstitch industrial sewing machines (DBx1 SPI standard)

• SPI – very sharp and narrow tip for fine and dense materials

• SERV 7 geometry – greater stability, fewer skipped stitches

• Precise stitch without fiber tearing and seam distortion

• Chrome coating ensures longer service life and smooth stitching

• Length to needle eye: 33.9 mm

• Shank diameter: 1.62 mm

• Blade shape: straight

• No shank flattening

• Number of grooves: 1

• Set includes: 10 needles

🔧 Suitable for

• Dense, technical, and coated fabrics

• Garments with precise, smooth seams

• High-quality topstitch sewing (e.g., shirts)

• Leather and fur sewing

Compatibility: DBX1 SPI SERV 7, 16X231 SPI SERV 7, 287 WH SPI SERV 7, 1738 (A) SPI SERV 7