The most commonly used needle is 14 gauge. It refers to the thickness of the needle. The thicker the needle, the thicker the material to be sewed, and the thinner the needle, the thinner the material to be sewed, and the length remains unchanged. Models of home sewing machine needles are:
No. 9 sewing machine needle, for thin fabrics (such as silk).
No. 11 sewing machine needle, for medium to thin fabrics (such as shirts, undershirt fabrics).
No. 14 sewing machine needle, for medium to thick fabrics (such as spring and autumn coat fabrics).
16-gauge sewing machine needle for heavy duty fabrics (such as jeans).
No. 18 - No. 21 sewing machine needles are used for thickened fabrics (such as thickened cotton fabrics).
