Cliquez sur cette image pour l'agrandir.
Cliquez sur cette image pour l'agrandir.
Référence pièce
Vous pouvez trouver ici le numéro
de référence lié au produit recherché.
L'aperçu 3D n'est pas disponible, car aucun code article n'a été généré.
Référence pièce |
Prix unitaire standard
| Quantité minimale de commande | Remise sur volume | RoHS | L dimension tolerance | D/P (Shaft diameter) (mm) | Step (Step shape of the first step) | Shape (Tip shape) | No. (Nominal diameter) (mm) | A (Step shape diameter) (mm) | C (Step type taper width) (mm) | CVC (Designation of C dimension in increments of 0.01mm) (mm) | DC (Gas release section diameter) (mm) | Extend the flat section SV to the bottom | F (Bearing bore length) (mm) | FC (Makes F dimension shorter than F min) (mm) | G (Tip C chamfering width) (mm) | K (Tip angle) (°) | L (L dimension) (mm) | N (Gas release section diameter) (mm) | PC (Gas release section diameter) (mm) | Q (Tip R chamfering) (mm) | S (Tip tapered width) (mm) | SV (Gas release facet cutting length) (mm) | V (Tip diameter) (mm) | VC (V dimension alteration (mm) | When DC = D | When PC=P | |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
- | 1 | Devis | 10 | 0/-0.05 | 8 ~ 9.999 | 1A | B | 10 | - | - | - | - | - | - | 5 ~ 14.49 | - | - | 6.5 ~ 60 | 0.5 ~ 15 | 7.92 ~ 9.998 | - | - | 2 ~ 60 | - | 1.5 ~ 1.995 | - | - | ||
- | 1 | Devis | 10 | 0/-0.05 | 8 ~ 9.999 | 1A | B | 10 | - | - | - | - | SVC | - | 5 ~ 14.49 | - | - | 6.5 ~ 60 | 0.5 ~ 15 | 7.92 ~ 9.998 | - | - | - | - | 1.5 ~ 1.995 | - | - | ||
- | 1 | Devis | 10 | 0/-0.05 | 8 ~ 9.999 | 1A | B | 10 | - | - | - | - | - | - | 5 ~ 14.49 | - | - | 6.5 ~ 60 | 0.5 ~ 15 | - | - | - | 2 ~ 60 | - | 1.5 ~ 1.995 | - | PCX | ||
- | 1 | Devis | 10 | 0/-0.05 | 8 ~ 9.999 | 1A | B | 10 | - | - | - | - | SVC | - | 5 ~ 14.49 | - | - | 6.5 ~ 60 | 0.5 ~ 15 | - | - | - | - | - | 1.5 ~ 1.995 | - | PCX | ||
- | 1 | Devis | 10 | 0/-0.05 | 10 ~ 12.999 | 1A | B | 13 | - | - | - | - | - | 14.5 ~ 58.75 | - | - | - | 6.5 ~ 60 | 0.5 ~ 15 | 9.92 ~ 12.998 | - | - | 2 ~ 60 | 2 ~ 12.995 | - | - | - | ||
- | 1 | Devis | 10 | 0/-0.05 | 10 ~ 12.999 | 1A | B | 13 | - | - | - | - | SVC | 14.5 ~ 58.75 | - | - | - | 6.5 ~ 60 | 0.5 ~ 15 | 9.92 ~ 12.998 | - | - | - | 2 ~ 12.995 | - | - | - | ||
- | 1 | Devis | 10 | 0/-0.05 | 10 ~ 12.999 | 1A | B | 13 | - | - | - | - | - | 14.5 ~ 58.75 | - | - | - | 6.5 ~ 60 | 0.5 ~ 15 | - | - | - | 2 ~ 60 | 2 ~ 12.995 | - | - | PCX | ||
- | 1 | Devis | 10 | 0/-0.05 | 10 ~ 12.999 | 1A | B | 13 | - | - | - | - | SVC | 14.5 ~ 58.75 | - | - | - | 6.5 ~ 60 | 0.5 ~ 15 | - | - | - | - | 2 ~ 12.995 | - | - | PCX | ||
- | 1 | Devis | 10 | 0/-0.05 | 10 ~ 12.999 | 1A | B | 13 | - | - | - | - | - | - | 5 ~ 14.49 | - | - | 6.5 ~ 60 | 0.5 ~ 15 | 9.92 ~ 12.998 | - | - | 2 ~ 60 | 2 ~ 12.995 | - | - | - | ||
- | 1 | Devis | 10 | 0/-0.05 | 10 ~ 12.999 | 1A | B | 13 | - | - | - | - | SVC | - | 5 ~ 14.49 | - | - | 6.5 ~ 60 | 0.5 ~ 15 | 9.92 ~ 12.998 | - | - | - | 2 ~ 12.995 | - | - | - | ||
- | 1 | Devis | 10 | 0/-0.05 | 10 ~ 12.999 | 1A | B | 13 | - | - | - | - | - | - | 5 ~ 14.49 | - | - | 6.5 ~ 60 | 0.5 ~ 15 | - | - | - | 2 ~ 60 | 2 ~ 12.995 | - | - | PCX | ||
- | 1 | Devis | 10 | 0/-0.05 | 10 ~ 12.999 | 1A | B | 13 | - | - | - | - | SVC | - | 5 ~ 14.49 | - | - | 6.5 ~ 60 | 0.5 ~ 15 | - | - | - | - | 2 ~ 12.995 | - | - | PCX | ||
- | 1 | Devis | 10 | 0/-0.05 | 0.8 ~ 0.999 | 1A | G | 1 | - | - | - | - | - | 14.5 ~ 58.97 | - | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | 0.72 ~ 0.998 | - | - | 2 ~ 50 | 0.5 ~ 0.995 | - | - | - | ||
- | 1 | Devis | 10 | 0/-0.05 | 0.8 ~ 0.999 | 1A | G | 1 | - | - | - | - | SVC | 14.5 ~ 58.97 | - | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | 0.72 ~ 0.998 | - | - | - | 0.5 ~ 0.995 | - | - | - | ||
- | 1 | Devis | 10 | 0/-0.05 | 0.8 ~ 0.999 | 1A | G | 1 | - | - | - | - | - | 14.5 ~ 58.97 | - | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | - | - | - | 2 ~ 50 | 0.5 ~ 0.995 | - | - | PCX | ||
- | 1 | Devis | 10 | 0/-0.05 | 0.8 ~ 0.999 | 1A | G | 1 | - | - | - | - | SVC | 14.5 ~ 58.97 | - | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | - | - | - | - | 0.5 ~ 0.995 | - | - | PCX | ||
- | 1 | Devis | 10 | 0/-0.05 | 0.8 ~ 0.999 | 1A | G | 1 | - | - | - | - | - | 14.5 ~ 58.97 | - | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | 0.72 ~ 0.998 | - | - | 2 ~ 50 | - | 0.4 ~ 0.495 | - | - | ||
- | 1 | Devis | 10 | 0/-0.05 | 0.8 ~ 0.999 | 1A | G | 1 | - | - | - | - | SVC | 14.5 ~ 58.97 | - | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | 0.72 ~ 0.998 | - | - | - | - | 0.4 ~ 0.495 | - | - | ||
- | 1 | Devis | 10 | 0/-0.05 | 0.8 ~ 0.999 | 1A | G | 1 | - | - | - | - | - | 14.5 ~ 58.97 | - | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | - | - | - | 2 ~ 50 | - | 0.4 ~ 0.495 | - | PCX | ||
- | 1 | Devis | 10 | 0/-0.05 | 0.8 ~ 0.999 | 1A | G | 1 | - | - | - | - | SVC | 14.5 ~ 58.97 | - | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | - | - | - | - | - | 0.4 ~ 0.495 | - | PCX | ||
- | 1 | Devis | 10 | 0/-0.05 | 0.8 ~ 0.999 | 1A | G | 1 | - | - | - | - | - | - | 5 ~ 14.49 | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | 0.72 ~ 0.998 | - | - | 2 ~ 50 | 0.5 ~ 0.995 | - | - | - | ||
- | 1 | Devis | 10 | 0/-0.05 | 0.8 ~ 0.999 | 1A | G | 1 | - | - | - | - | SVC | - | 5 ~ 14.49 | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | 0.72 ~ 0.998 | - | - | - | 0.5 ~ 0.995 | - | - | - | ||
- | 1 | Devis | 10 | 0/-0.05 | 0.8 ~ 0.999 | 1A | G | 1 | - | - | - | - | - | - | 5 ~ 14.49 | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | - | - | - | 2 ~ 50 | 0.5 ~ 0.995 | - | - | PCX | ||
- | 1 | Devis | 10 | 0/-0.05 | 0.8 ~ 0.999 | 1A | G | 1 | - | - | - | - | SVC | - | 5 ~ 14.49 | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | - | - | - | - | 0.5 ~ 0.995 | - | - | PCX | ||
- | 1 | Devis | 10 | 0/-0.05 | 0.8 ~ 0.999 | 1A | G | 1 | - | - | - | - | - | - | 5 ~ 14.49 | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | 0.72 ~ 0.998 | - | - | 2 ~ 50 | - | 0.4 ~ 0.495 | - | - | ||
- | 1 | Devis | 10 | 0/-0.05 | 0.8 ~ 0.999 | 1A | G | 1 | - | - | - | - | SVC | - | 5 ~ 14.49 | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | 0.72 ~ 0.998 | - | - | - | - | 0.4 ~ 0.495 | - | - | ||
- | 1 | Devis | 10 | 0/-0.05 | 0.8 ~ 0.999 | 1A | G | 1 | - | - | - | - | - | - | 5 ~ 14.49 | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | - | - | - | 2 ~ 50 | - | 0.4 ~ 0.495 | - | PCX | ||
- | 1 | Devis | 10 | 0/-0.05 | 0.8 ~ 0.999 | 1A | G | 1 | - | - | - | - | SVC | - | 5 ~ 14.49 | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | - | - | - | - | - | 0.4 ~ 0.495 | - | PCX | ||
- | 1 | Devis | 10 | 0/-0.05 | 1 ~ 1.499 | 1A | G | 1.5 | - | - | - | - | - | 14.5 ~ 58.97 | - | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | 0.92 ~ 1.498 | - | - | 2 ~ 50 | 0.5 ~ 1.495 | - | - | - | ||
- | 1 | Devis | 10 | 0/-0.05 | 1 ~ 1.499 | 1A | G | 1.5 | - | - | - | - | SVC | 14.5 ~ 58.97 | - | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | 0.92 ~ 1.498 | - | - | - | 0.5 ~ 1.495 | - | - | - | ||
- | 1 | Devis | 10 | 0/-0.05 | 1 ~ 1.499 | 1A | G | 1.5 | - | - | - | - | - | 14.5 ~ 58.97 | - | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | - | - | - | 2 ~ 50 | 0.5 ~ 1.495 | - | - | PCX | ||
- | 1 | Devis | 10 | 0/-0.05 | 1 ~ 1.499 | 1A | G | 1.5 | - | - | - | - | SVC | 14.5 ~ 58.97 | - | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | - | - | - | - | 0.5 ~ 1.495 | - | - | PCX | ||
- | 1 | Devis | 10 | 0/-0.05 | 1 ~ 1.499 | 1A | G | 1.5 | - | - | - | - | - | 14.5 ~ 58.97 | - | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | 0.92 ~ 1.498 | - | - | 2 ~ 50 | - | 0.4 ~ 0.495 | - | - | ||
- | 1 | Devis | 10 | 0/-0.05 | 1 ~ 1.499 | 1A | G | 1.5 | - | - | - | - | SVC | 14.5 ~ 58.97 | - | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | 0.92 ~ 1.498 | - | - | - | - | 0.4 ~ 0.495 | - | - | ||
- | 1 | Devis | 10 | 0/-0.05 | 1 ~ 1.499 | 1A | G | 1.5 | - | - | - | - | - | 14.5 ~ 58.97 | - | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | - | - | - | 2 ~ 50 | - | 0.4 ~ 0.495 | - | PCX | ||
- | 1 | Devis | 10 | 0/-0.05 | 1 ~ 1.499 | 1A | G | 1.5 | - | - | - | - | SVC | 14.5 ~ 58.97 | - | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | - | - | - | - | - | 0.4 ~ 0.495 | - | PCX | ||
- | 1 | Devis | 10 | 0/-0.05 | 1 ~ 1.499 | 1A | G | 1.5 | - | - | - | - | - | - | 5 ~ 14.49 | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | 0.92 ~ 1.498 | - | - | 2 ~ 50 | 0.5 ~ 1.495 | - | - | - | ||
- | 1 | Devis | 10 | 0/-0.05 | 1 ~ 1.499 | 1A | G | 1.5 | - | - | - | - | SVC | - | 5 ~ 14.49 | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | 0.92 ~ 1.498 | - | - | - | 0.5 ~ 1.495 | - | - | - | ||
- | 1 | Devis | 10 | 0/-0.05 | 1 ~ 1.499 | 1A | G | 1.5 | - | - | - | - | - | - | 5 ~ 14.49 | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | - | - | - | 2 ~ 50 | 0.5 ~ 1.495 | - | - | PCX | ||
- | 1 | Devis | 10 | 0/-0.05 | 1 ~ 1.499 | 1A | G | 1.5 | - | - | - | - | SVC | - | 5 ~ 14.49 | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | - | - | - | - | 0.5 ~ 1.495 | - | - | PCX | ||
- | 1 | Devis | 10 | 0/-0.05 | 1 ~ 1.499 | 1A | G | 1.5 | - | - | - | - | - | - | 5 ~ 14.49 | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | 0.92 ~ 1.498 | - | - | 2 ~ 50 | - | 0.4 ~ 0.495 | - | - | ||
- | 1 | Devis | 10 | 0/-0.05 | 1 ~ 1.499 | 1A | G | 1.5 | - | - | - | - | SVC | - | 5 ~ 14.49 | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | 0.92 ~ 1.498 | - | - | - | - | 0.4 ~ 0.495 | - | - | ||
- | 1 | Devis | 10 | 0/-0.05 | 1 ~ 1.499 | 1A | G | 1.5 | - | - | - | - | - | - | 5 ~ 14.49 | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | - | - | - | 2 ~ 50 | - | 0.4 ~ 0.495 | - | PCX | ||
- | 1 | Devis | 10 | 0/-0.05 | 1 ~ 1.499 | 1A | G | 1.5 | - | - | - | - | SVC | - | 5 ~ 14.49 | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | - | - | - | - | - | 0.4 ~ 0.495 | - | PCX | ||
- | 1 | Devis | 10 | 0/-0.05 | 1.5 ~ 1.999 | 1A | G | 2 | - | - | - | - | - | 14.5 ~ 58.84 | - | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | 1.42 ~ 1.998 | - | - | 2 ~ 50 | 0.5 ~ 1.995 | - | - | - | ||
- | 1 | Devis | 10 | 0/-0.05 | 1.5 ~ 1.999 | 1A | G | 2 | - | - | - | - | SVC | 14.5 ~ 58.84 | - | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | 1.42 ~ 1.998 | - | - | - | 0.5 ~ 1.995 | - | - | - | ||
- | 1 | Devis | 10 | 0/-0.05 | 1.5 ~ 1.999 | 1A | G | 2 | - | - | - | - | - | 14.5 ~ 58.84 | - | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | - | - | - | 2 ~ 50 | 0.5 ~ 1.995 | - | - | PCX | ||
- | 1 | Devis | 10 | 0/-0.05 | 1.5 ~ 1.999 | 1A | G | 2 | - | - | - | - | SVC | 14.5 ~ 58.84 | - | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | - | - | - | - | 0.5 ~ 1.995 | - | - | PCX | ||
- | 1 | Devis | 10 | 0/-0.05 | 1.5 ~ 1.999 | 1A | G | 2 | - | - | - | - | - | - | 5 ~ 14.49 | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | 1.42 ~ 1.998 | - | - | 2 ~ 50 | 0.5 ~ 1.995 | - | - | - | ||
- | 1 | Devis | 10 | 0/-0.05 | 1.5 ~ 1.999 | 1A | G | 2 | - | - | - | - | SVC | - | 5 ~ 14.49 | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | 1.42 ~ 1.998 | - | - | - | 0.5 ~ 1.995 | - | - | - | ||
- | 1 | Devis | 10 | 0/-0.05 | 1.5 ~ 1.999 | 1A | G | 2 | - | - | - | - | - | - | 5 ~ 14.49 | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | - | - | - | 2 ~ 50 | 0.5 ~ 1.995 | - | - | PCX | ||
- | 1 | Devis | 10 | 0/-0.05 | 1.5 ~ 1.999 | 1A | G | 2 | - | - | - | - | SVC | - | 5 ~ 14.49 | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | - | - | - | - | 0.5 ~ 1.995 | - | - | PCX | ||
- | 1 | Devis | 10 | 0/-0.05 | 2 ~ 2.499 | 1A | G | 2.5 | - | - | - | - | - | 14.5 ~ 58.84 | - | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | 1.92 ~ 2.498 | - | - | 2 ~ 50 | 0.5 ~ 2.495 | - | - | - | ||
- | 1 | Devis | 10 | 0/-0.05 | 2 ~ 2.499 | 1A | G | 2.5 | - | - | - | - | SVC | 14.5 ~ 58.84 | - | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | 1.92 ~ 2.498 | - | - | - | 0.5 ~ 2.495 | - | - | - | ||
- | 1 | Devis | 10 | 0/-0.05 | 2 ~ 2.499 | 1A | G | 2.5 | - | - | - | - | - | 14.5 ~ 58.84 | - | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | - | - | - | 2 ~ 50 | 0.5 ~ 2.495 | - | - | PCX | ||
- | 1 | Devis | 10 | 0/-0.05 | 2 ~ 2.499 | 1A | G | 2.5 | - | - | - | - | SVC | 14.5 ~ 58.84 | - | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | - | - | - | - | 0.5 ~ 2.495 | - | - | PCX | ||
- | 1 | Devis | 10 | 0/-0.05 | 2 ~ 2.499 | 1A | G | 2.5 | - | - | - | - | - | - | 5 ~ 14.49 | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | 1.92 ~ 2.498 | - | - | 2 ~ 50 | 0.5 ~ 2.495 | - | - | - | ||
- | 1 | Devis | 10 | 0/-0.05 | 2 ~ 2.499 | 1A | G | 2.5 | - | - | - | - | SVC | - | 5 ~ 14.49 | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | 1.92 ~ 2.498 | - | - | - | 0.5 ~ 2.495 | - | - | - | ||
- | 1 | Devis | 10 | 0/-0.05 | 2 ~ 2.499 | 1A | G | 2.5 | - | - | - | - | - | - | 5 ~ 14.49 | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | - | - | - | 2 ~ 50 | 0.5 ~ 2.495 | - | - | PCX | ||
- | 1 | Devis | 10 | 0/-0.05 | 2 ~ 2.499 | 1A | G | 2.5 | - | - | - | - | SVC | - | 5 ~ 14.49 | - | 21 ~ 60 | 6.5 ~ 60 | 0.3 ~ 10 | - | - | - | - | 0.5 ~ 2.495 | - | - | PCX |
Loading...
Shape type | One-step gas release | Material | SKH51 | Shaft diameter tolerance | 0/-0.003 |
---|---|---|---|---|---|
Tip gradient tolerance | ±0.005 | Surface treatment | No | Head thickness | 4mm(T4) |
Step (Step shape of the second step) | No second step |
Configurer
Propriétés de base
D/P (Shaft diameter)(mm)
Step (Step shape of the first step)
Shape (Tip shape)
No. (Nominal diameter)(mm)
A (Step shape diameter)(mm)
C (Step type taper width)(mm)
CVC (Designation of C dimension in increments of 0.01mm)(mm)
DC (Gas release section diameter)(mm)
[0.92-0.999/0.001mmunités][1.42-1.499/0.001mmunités][1.92-1.999/0.001mmunités][2.42-2.499/0.001mmunités][2.92-2.999/0.001mmunités][3.42-3.499/0.001mmunités][3.92-3.999/0.001mmunités][4.42-4.499/0.001mmunités][4.92-4.999/0.001mmunités][5.42-5.499/0.001mmunités][5.92-5.999/0.001mmunités][6.92-6.999/0.001mmunités][7.92-7.999/0.001mmunités][9.92-9.999/0.001mmunités][12.92-12.999/0.001mmunités]
Extend the flat section SV to the bottom
F (Bearing bore length)(mm)
FC (Makes F dimension shorter than F min)(mm)
G (Tip C chamfering width)(mm)
K (Tip angle)(°)
L (L dimension)(mm)
N (Gas release section diameter)(mm)
PC (Gas release section diameter)(mm)
Q (Tip R chamfering)(mm)
S (Tip tapered width)(mm)
SV (Gas release facet cutting length)(mm)
V (Tip diameter)(mm)
VC (V dimension alteration(mm)
When DC = D
When PC=P
Type
L dimension tolerance
Filtrer par type de données CAO
Propriétés optionnelles