T = Diameter Ulir ( Thread ) 2 = Jarak Antar Ulir ( Pitch ) D = Jarak Linear Nut dalam Putaran Screw ( Lead ) Lead = Start *Pitch Start = Jumlah Ulir Awal Pada Ujung Leadscrew Lead 8mm Diameter 8mm Pitch 2mm Start 4 Panjang 1 Meter Dijual Per 1 pcs, tanpa Nut