DBx1 SPI, 16x231 SPI — SCHMETZ industrial sewing machine needles for thick and thin fabrics, 10 pcs.

DBx1 SPI, 16x231 SPI are SCHMETZ industrial sewing machine needles for tightly woven, thin, and delicate fabrics. The SPI's particularly sharp, slim round point helps pierce the material precisely, reducing the risk of seam puckering and creating a neat stitch line.

SPI point characteristics

SPI (Acute Round Point) is a sharp, slim round needle point with a fine conical shape. It is designed to pierce tightly woven and certain coated fabrics precisely.

This point type helps create precise stitches and reduce puckering around the seam line. SPI is especially useful for sewing delicate, smooth, and very tightly woven materials.

Suitable materials and applications

• Very tightly woven fabrics.
• Microfiber fabrics.
• Silk and fine silk fabrics.
• Thin, smooth fabrics such as taffeta.
• Thin coated textiles.
• Precise topstitching on shirt collars and cuffs.
• Materials with uncoated elastomer threads, when the SPI point type is suitable.

Technical specifications

• Manufacturer: SCHMETZ.
• Needle system: DBx1 SPI.
• Alternative designation: 16x231 SPI.
• Needle point type: SPI — Acute Round Point.
• Point shape: sharp, slim round point.
• Application: for tightly woven, thin, and delicate fabrics.
• Package: 10 needles.

Compatibility and needle selection

Designed for industrial sewing machines whose technical documentation specifies the compatible DBx1 or 16x231 system. Before purchasing, choose an NM size suitable for the material and sewing thread.

Important: The sharp SPI point is not a universal choice for all knits. SES or SUK ball points are generally more suitable for sewing knits. If greater needle stability is required during sewing, compare SPI with the SPI SERV 7 design.