Nombre de dents (effet polygonal)Largeur Diamètre primitifLargeur Diamètre extérieurLargeur moyeu nominaleTailles d'alésage disponibles
pouce(s)mmpouce(s)mmpouce(s)mmRond (pouces)Carré (pouces)Rond (mm)Carré (mm)
12 (3,41%)2,3582,3581,0251,01,02525
16 (1,92 %)3,1793,1791,0251,0, 1-1/16, 1-1/8, 1-1/4 25, 30
18 (1,52 %)3,5893,5891,0251,01,0 25
20 (1,23 %)3,8973,8971,025 1,5 40
24 (0,86%)4.61174,71191,0251,0, 1-1/8, 1-3/16, 1-1/4 25, 30
26 (0,73 %)5,11305,11301,0251,0, 1-1/16, 1-1/8, 1-1/41,525, 3040
32 (0,48 %)6.11556.21571,0251,0, 1-1/16, 1-1/8, 1-3/16, 1-1/4, 1-1/2 25, 30, 40