Single jersey knitted fabrics are widely used in production of summer clothing and dimensional distortion caused by domestic laundery is an important issue for this type of fabrics. In this study, the effects of fabric density and nozzle type on structural properties, dimensional stability and spirality of single jersey knitted fabrics were investigated for both grey and dyed state. Fabrics were produced with 100% cotton, Ne 30/1 rotor spun yarn. Five different ceramic nozzle types were used in yarn production. The yarns were converted to single jersey knitted fabrics adjusting the yarn loop length between 14-17 cm on the machine as they were the minimun and maximum values limited by the yarn type, machine and commercially accepted conditions. The effect of nozzle type on dimensional stability and spirality is found statistically insignificant, whereas the effect of yarn loop length is significant.