7X4DIA | DYx3D | 794DIA | #180 Leather diamond point needle (pack of 10)

The 7x4DIA (also known as 794DIA) is an extra-heavy-duty industrial needle system featuring a diamond point (DIA) specifically designed for sewing hard, dry, or dense leathers.

Point Characteristics: The Diamond (DIA) Point
The DIA point is a four-edged cutting point that pierces a quadruple-edge hole into the material.
Performance: The blade cuts through leather fibers rather than pushing them aside, significantly reducing the force needed for penetration.
Stitch Appearance: It produces a very straight seam where the thread sits slightly elevated and the stitch holes remain clearly visible, which is often a signature look for luxury leather goods.
Ideal Materials: Best for heavy and unyielding materials like real leather, suede, heavy vinyl, and even cardboard.

Technical Specifications
This system is one of the largest and strongest industrial needle classes available.
Shank Diameter: 2.50 mm.
Length to Eye: 60.10mm.
Overall Length: 69.40mm.
Equivalent Systems: 794DIA, DYx1, DYx3, SY 5213.

Machine Compatibility
The 7x4DIA system is used in high-torque, extra-heavy-duty machines typically found in saddlery, harness making, and heavy upholstery.
Titan: TN-441
Singer: Class 7, 34 Class, 144 Class.
Techsew: 5100, 5100SE, 4100, 180.
Cowboy: 4500.
Juki: TSC-441, TNU-243.
Adler: 204-370, 205-370