Schmetz Sewing Machine Needles - Jeans - Size 16/100 - 5/Pkg

This refers to the needle system. '130/705 H' is the standard designation for home sewing machine needles with a flat shank. The '-J' specifically indicates that this needle is optimized for Jeans and Denim fabrics.

While these are a type of universal needle, they have a reinforced blade and a medium ball point specifically engineered to penetrate and pass through tough, dense fabrics like denim more easily and with less risk of breakage or skipped stitches compared to a standard universal needle with a sharp point.

Most modern and many vintage household sewing machines use the 130/705 H needle system, which has a flat shank. Check your sewing machine's manual or look at the current needles installed; if they have a flat side on the shank, these Schmetz needles should be compatible.

These needles are ideal for denim, jeans, heavy cottons, canvas, oilskin, and other similarly thick woven fabrics. They are also suitable for multiple layers of these materials.

It's recommended to change your needle after every major project or approximately every 8-10 hours of sewing, especially when working with heavy fabrics. A dull needle can cause skipped stitches, thread breaks, and fabric damage.

The upper color marking (Blue) and lower color marking (Purple) are Schmetz's system for easy identification. For this specific needle, Blue typically indicates it's a Jeans/Denim needle, and Purple indicates the size (100/16).

While these needles are very strong, their medium ball point is not ideal for quilting through multiple thin layers of fabric where a sharp point is preferred for precision. For quilting, a Quilting needle or a standard Universal needle with a sharp point is generally recommended.

Ensure the correct needle type (Jeans/Denim) is being used and that it is inserted correctly with the flat side facing the back. Verify the needle is not bent or dull; replace if necessary. Check thread tension and machine condition.

Confirm you are using the correct needle size for your fabric thickness. Ensure the needle is fully inserted into the clamp and that the machine's timing is correct. Reduce sewing speed through very thick areas.

The needle point may be too sharp for the fabric, or the needle is dull. Ensure you are using the Schmetz Jeans needle, which has a medium ball point designed for thicker materials. Replace the needle if it shows signs of wear.