135x16 DIA, DPx16 DIA — SCHMETZ Industrial Sewing Machine Needles for Leather, 10 pcs.

SCHMETZ 135X16 DIA needles for industrial sewing machines, also known as DPX16 DIA are leather needles with a DI (Diamond point) cutting point. This point type has a diamond-shaped cross-section, and the cut through the material is made at a 90° angle to the thread direction. The result is a very straight, slightly recessed seam, with a precise, firm stitch line and no needle deflection, even in hard, dry leather.

🧵 Suitable materials

• Hard, dry genuine leather
• Hard artificial leather and composite materials
• Multilayer leather goods
• Thick, stiff leather parts – soles, belts, inserts, etc.

✨ Where DI really stands out

• Very straight, recessed seams that do not protrude above the leather surface
• Standard and coarser decorative seams with a clear stitch pattern
• Seams on shoes, bags, and suitcases where maximum precision is required
• Areas where it is important that the needle does not deflect or lift the material

🎯 Advantages of DI (Diamond point)

• 4 cutting edges – the needle penetrates heavy, hard leather more easily
• No needle deflection – the stitch follows the marked line, ideal for perfectly straight seams
• A clean, professional stitch appearance without fraying the material
• A very straight seam – unlike the angled decorative seams made with LR/VR points

🧶 Thread recommendations for leather

Choose the thread size based on the leather thickness and the desired seam prominence:

• For coarser decorative seams (on bags, suitcases, shoes): polyester / polyamide tex 75–150 (No. 20–8) with NM 120–200 needle
• For standard and medium-coarse seams: polyester tex 50–75 (No. 40–30) with NM 110–140 needle

🔧 Compatibility

Suitable for industrial straight-stitch (lockstitch) sewing machines designed for the 135X16 DIA, DPX16 DIA needle system.

Equivalent needle systems: 135X16 DIA, DPX16 DIA

📐 Technical details

• CANU: 20:05KJ1
• Point type: DI – Diamond point (diamond-shaped, cut at 90° to the thread direction)
• Coating: Chrome
• Shank Ø: 2.0 mm
• Overall length: 44.0 mm
• Length to eye: 38.9 mm
• Shank flat: no flat
• Blade shape: straight
• Number of grooves: 1
• Stitch type: Lockstitch (straight stitch)
• Packaging: 10 needles
• Available sizes: NM 110–200

ℹ️ Note

The final appearance of the seam also depends on the machine settings, thread type, and leather texture. If you want a visually softer or angled decorative seam, consider needles with LR/VR or S-type cutting points as well.

✅ Why choose SCHMETZ DPx16 DI?

• Excellent straight, recessed seams in heavy leather
• The four-edge cutting design ensures easy material penetration and stable stitching
• A reliable choice for manufacturing shoes, bags, suitcases, and other hard leather goods ražošanai
• SCHMETZ quality – designed for intensive, professional industrial sewing