Codice componente
Qui sono indicati i codici componente
correlati al prodotto ricercato
L'anteprima 3D non è disponibile perché non è ancora stato definito il codice componente.
Codice componente
|
---|
H-AP3K5-[40-80/10]-P[2.2-4.9/0.01]-W[2-4.9/0.01]-A[0.5-4/0.01] |
H-AP3K5-LC[44-79.9/0.1]-P[2.2-4.9/0.01]-W[2-4.9/0.01]-A[0.5-4/0.01] |
H-AP3K6-[40-80/10]-P[2.2-5.9/0.01]-W[2-5.9/0.01]-A[0.5-5/0.01] |
H-AP3K6-LC[44-79.9/0.1]-P[2.2-5.9/0.01]-W[2-5.9/0.01]-A[0.5-5/0.01] |
H-AP3K8-[40-100/10]-P[2.2-7.9/0.01]-W[2-7.9/0.01]-A[0.5-7/0.01] |
H-AP3K8-LC[44-99.9/0.1]-P[2.2-7.9/0.01]-W[2-7.9/0.01]-A[0.5-7/0.01] |
H-AP3K10-[40-100/10]-P[2.5-9.9/0.01]-W[2.5-9.9/0.01]-A[0.5-9/0.01] |
H-AP3K10-LC[44-99.9/0.1]-P[2.5-9.9/0.01]-W[2.5-9.9/0.01]-A[0.5-9/0.01] |
H-AP3K13-[40-100/10]-P[3-12.9/0.01]-W[3-12.9/0.01]-A[0.5-12/0.01] |
H-AP3K13-LC[44-99.9/0.1]-P[3-12.9/0.01]-W[3-12.9/0.01]-A[0.5-12/0.01] |
H-AP3K16-[40-100/10]-P[4-15.9/0.01]-W[4-15.9/0.01]-A[0.5-15/0.01] |
H-AP3K16-LC[44-99.9/0.1]-P[4-15.9/0.01]-W[4-15.9/0.01]-A[0.5-15/0.01] |
H-AP3K20-[40-100/10]-P[5-19.9/0.01]-W[5-19.9/0.01]-A[0.5-19/0.01] |
H-AP3K20-LC[44-99.9/0.1]-P[5-19.9/0.01]-W[5-19.9/0.01]-A[0.5-19/0.01] |
H-AP3K25-[40-100/10]-P[6-24.9/0.01]-W[6-24.9/0.01]-A[0.5-24/0.01] |
H-AP3K25-LC[44-99.9/0.1]-P[6-24.9/0.01]-W[6-24.9/0.01]-A[0.5-24/0.01] |
H-APH3K5-[40-80/10]-P[2.2-4.9/0.01]-W[2-4.9/0.01]-A[0.5-4/0.01] |
H-APH3K5-LC[44-79.9/0.1]-P[2.2-4.9/0.01]-W[2-4.9/0.01]-A[0.5-4/0.01] |
H-APH3K6-[40-80/10]-P[2.2-5.9/0.01]-W[2-5.9/0.01]-A[0.5-5/0.01] |
H-APH3K6-LC[44-79.9/0.1]-P[2.2-5.9/0.01]-W[2-5.9/0.01]-A[0.5-5/0.01] |
H-APH3K8-[40-100/10]-P[2.2-7.9/0.01]-W[2-7.9/0.01]-A[0.5-7/0.01] |
H-APH3K8-LC[44-99.9/0.1]-P[2.2-7.9/0.01]-W[2-7.9/0.01]-A[0.5-7/0.01] |
H-APH3K10-[40-100/10]-P[2.5-9.9/0.01]-W[2.5-9.9/0.01]-A[0.5-9/0.01] |
H-APH3K10-LC[44-99.9/0.1]-P[2.5-9.9/0.01]-W[2.5-9.9/0.01]-A[0.5-9/0.01] |
H-APH3K13-[40-100/10]-P[3-12.9/0.01]-W[3-12.9/0.01]-A[0.5-12/0.01] |
H-APH3K13-LC[44-99.9/0.1]-P[3-12.9/0.01]-W[3-12.9/0.01]-A[0.5-12/0.01] |
H-APH3K16-[40-100/10]-P[4-15.9/0.01]-W[4-15.9/0.01]-A[0.5-15/0.01] |
H-APH3K16-LC[44-99.9/0.1]-P[4-15.9/0.01]-W[4-15.9/0.01]-A[0.5-15/0.01] |
H-APH3K20-[40-100/10]-P[5-19.9/0.01]-W[5-19.9/0.01]-A[0.5-19/0.01] |
H-APH3K20-LC[44-99.9/0.1]-P[5-19.9/0.01]-W[5-19.9/0.01]-A[0.5-19/0.01] |
H-APH3K25-[40-100/10]-P[6-24.9/0.01]-W[6-24.9/0.01]-A[0.5-24/0.01] |
H-APH3K25-LC[44-99.9/0.1]-P[6-24.9/0.01]-W[6-24.9/0.01]-A[0.5-24/0.01] |
H-PH3K4-[40-80/10]-P[2.2-3.9/0.01]-W[2-3.9/0.01]-A[0.5-3/0.01] |
H-PH3K4-LC[37-79.9/0.1]-P[2.2-3.9/0.01]-W[2-3.9/0.01]-A[0.5-3/0.01] |
H-PH3K5-[40-80/10]-P[2.2-4.9/0.01]-W[2-4.9/0.01]-A[0.5-4/0.01] |
H-PH3K5-LC[37-79.9/0.1]-P[2.2-4.9/0.01]-W[2-4.9/0.01]-A[0.5-4/0.01] |
H-PH3K6-[40-80/10]-P[2.2-5.9/0.01]-W[2-5.9/0.01]-A[0.5-5/0.01] |
H-PH3K6-LC[37-79.9/0.1]-P[2.2-5.9/0.01]-W[2-5.9/0.01]-A[0.5-5/0.01] |
H-PH3K8-[40-100/10]-P[2.2-7.9/0.01]-W[2-7.9/0.01]-A[0.5-7/0.01] |
H-PH3K8-LC[37-99.9/0.1]-P[2.2-7.9/0.01]-W[2-7.9/0.01]-A[0.5-7/0.01] |
H-PH3K10-[40-100/10]-P[2.5-9.9/0.01]-W[2.5-9.9/0.01]-A[0.5-9/0.01] |
H-PH3K10-LC[37-99.9/0.1]-P[2.5-9.9/0.01]-W[2.5-9.9/0.01]-A[0.5-9/0.01] |
H-PH3K13-[40-100/10]-P[3-12.9/0.01]-W[3-12.9/0.01]-A[0.5-12/0.01] |
H-PH3K13-LC[37-99.9/0.1]-P[3-12.9/0.01]-W[3-12.9/0.01]-A[0.5-12/0.01] |
H-PH3K16-[40-100/10]-P[4-15.9/0.01]-W[4-15.9/0.01]-A[0.5-15/0.01] |
H-PH3K16-LC[37-99.9/0.1]-P[4-15.9/0.01]-W[4-15.9/0.01]-A[0.5-15/0.01] |
H-PH3K20-[40-100/10]-P[5-19.9/0.01]-W[5-19.9/0.01]-A[0.5-19/0.01] |
H-PH3K20-LC[37-99.9/0.1]-P[5-19.9/0.01]-W[5-19.9/0.01]-A[0.5-19/0.01] |
H-PH3K25-[40-100/10]-P[6-24.9/0.01]-W[6-24.9/0.01]-A[0.5-24/0.01] |
H-PH3K25-LC[37-99.9/0.1]-P[6-24.9/0.01]-W[6-24.9/0.01]-A[0.5-24/0.01] |
H-SH3K4-[40-80/10]-P[2.2-3.9/0.01]-W[2-3.9/0.01]-A[0.5-3/0.01] |
H-SH3K4-LC[37-79.9/0.1]-P[2.2-3.9/0.01]-W[2-3.9/0.01]-A[0.5-3/0.01] |
H-SH3K5-[40-80/10]-P[2.2-4.9/0.01]-W[2-4.9/0.01]-A[0.5-4/0.01] |
H-SH3K5-LC[37-79.9/0.1]-P[2.2-4.9/0.01]-W[2-4.9/0.01]-A[0.5-4/0.01] |
H-SH3K6-[40-80/10]-P[2.2-5.9/0.01]-W[2-5.9/0.01]-A[0.5-5/0.01] |
H-SH3K6-LC[37-79.9/0.1]-P[2.2-5.9/0.01]-W[2-5.9/0.01]-A[0.5-5/0.01] |
H-SH3K8-[40-100/10]-P[2.2-7.9/0.01]-W[2-7.9/0.01]-A[0.5-7/0.01] |
H-SH3K8-LC[37-99.9/0.1]-P[2.2-7.9/0.01]-W[2-7.9/0.01]-A[0.5-7/0.01] |
H-SH3K10-[40-100/10]-P[2.5-9.9/0.01]-W[2.5-9.9/0.01]-A[0.5-9/0.01] |
H-SH3K10-LC[37-99.9/0.1]-P[2.5-9.9/0.01]-W[2.5-9.9/0.01]-A[0.5-9/0.01] |
Codice componente | Quantità minima d'ordine | Sconto volumi elevati | RoHS | Tip shape | Material | Surface treatment | Punch shank (mounting part) shape | D (Outer diameter) (mm) | L | A | B | C | LC | P | Q | R | S | W | |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | Preventivo | 10 | 3K | SKH51 Equivalent | TiCN | Heavy load | 5 | 40 ~ 80 | 0.5 ~ 4 | - | - | - | 2 ~ 4.9 | - | - | - | 2 ~ 4.9 | ||
1 | Preventivo | 10 | 3K | SKH51 Equivalent | TiCN | Heavy load | 5 | - | 0.5 ~ 4 | - | - | 44 ~ 79.9 | 2 ~ 4.9 | - | - | - | 2 ~ 4.9 | ||
1 | Preventivo | 10 | 3K | SKH51 Equivalent | TiCN | Heavy load | 6 | 40 ~ 80 | 0.5 ~ 5 | - | - | - | 2 ~ 5.9 | - | - | - | 2 ~ 5.9 | ||
1 | Preventivo | 10 | 3K | SKH51 Equivalent | TiCN | Heavy load | 6 | - | 0.5 ~ 5 | - | - | 44 ~ 79.9 | 2 ~ 5.9 | - | - | - | 2 ~ 5.9 | ||
1 | Preventivo | 10 | 3K | SKH51 Equivalent | TiCN | Heavy load | 8 | 40 ~ 100 | 0.5 ~ 7 | - | - | - | 2 ~ 7.9 | - | - | - | 2 ~ 7.9 | ||
1 | Preventivo | 10 | 3K | SKH51 Equivalent | TiCN | Heavy load | 8 | - | 0.5 ~ 7 | - | - | 44 ~ 99.9 | 2 ~ 7.9 | - | - | - | 2 ~ 7.9 | ||
1 | Preventivo | 10 | 3K | SKH51 Equivalent | TiCN | Heavy load | 10 | 40 ~ 100 | 0.5 ~ 9 | - | - | - | 2.5 ~ 9.9 | - | - | - | 2.5 ~ 9.9 | ||
1 | Preventivo | 10 | 3K | SKH51 Equivalent | TiCN | Heavy load | 10 | - | 0.5 ~ 9 | - | - | 44 ~ 99.9 | 2.5 ~ 9.9 | - | - | - | 2.5 ~ 9.9 | ||
1 | Preventivo | 10 | 3K | SKH51 Equivalent | TiCN | Heavy load | 13 | 40 ~ 100 | 0.5 ~ 12 | - | - | - | 3 ~ 12.9 | - | - | - | 3 ~ 12.9 | ||
1 | Preventivo | 10 | 3K | SKH51 Equivalent | TiCN | Heavy load | 13 | - | 0.5 ~ 12 | - | - | 44 ~ 99.9 | 3 ~ 12.9 | - | - | - | 3 ~ 12.9 | ||
1 | Preventivo | 10 | 3K | SKH51 Equivalent | TiCN | Heavy load | 16 | 40 ~ 100 | 0.5 ~ 15 | - | - | - | 4 ~ 15.9 | - | - | - | 4 ~ 15.9 | ||
1 | Preventivo | 10 | 3K | SKH51 Equivalent | TiCN | Heavy load | 16 | - | 0.5 ~ 15 | - | - | 44 ~ 99.9 | 4 ~ 15.9 | - | - | - | 4 ~ 15.9 | ||
1 | Preventivo | 10 | 3K | SKH51 Equivalent | TiCN | Heavy load | 20 | 40 ~ 100 | 0.5 ~ 19 | - | - | - | 5 ~ 19.9 | - | - | - | 5 ~ 19.9 | ||
1 | Preventivo | 10 | 3K | SKH51 Equivalent | TiCN | Heavy load | 20 | - | 0.5 ~ 19 | - | - | 44 ~ 99.9 | 5 ~ 19.9 | - | - | - | 5 ~ 19.9 | ||
1 | Preventivo | 10 | 3K | SKH51 Equivalent | TiCN | Heavy load | 25 | 40 ~ 100 | 0.5 ~ 24 | - | - | - | 6 ~ 24.9 | - | - | - | 6 ~ 24.9 | ||
1 | Preventivo | 10 | 3K | SKH51 Equivalent | TiCN | Heavy load | 25 | - | 0.5 ~ 24 | - | - | 44 ~ 99.9 | 6 ~ 24.9 | - | - | - | 6 ~ 24.9 | ||
1 | Preventivo | 10 | 3K | Powdered high-speed steel | TiCN | Heavy load | 5 | 40 ~ 80 | 0.5 ~ 4 | - | - | - | 2 ~ 4.9 | - | - | - | 2 ~ 4.9 | ||
1 | Preventivo | 10 | 3K | Powdered high-speed steel | TiCN | Heavy load | 5 | - | 0.5 ~ 4 | - | - | 44 ~ 79.9 | 2 ~ 4.9 | - | - | - | 2 ~ 4.9 | ||
1 | Preventivo | 10 | 3K | Powdered high-speed steel | TiCN | Heavy load | 6 | 40 ~ 80 | 0.5 ~ 5 | - | - | - | 2 ~ 5.9 | - | - | - | 2 ~ 5.9 | ||
1 | Preventivo | 10 | 3K | Powdered high-speed steel | TiCN | Heavy load | 6 | - | 0.5 ~ 5 | - | - | 44 ~ 79.9 | 2 ~ 5.9 | - | - | - | 2 ~ 5.9 | ||
1 | Preventivo | 10 | 3K | Powdered high-speed steel | TiCN | Heavy load | 8 | 40 ~ 100 | 0.5 ~ 7 | - | - | - | 2 ~ 7.9 | - | - | - | 2 ~ 7.9 | ||
1 | Preventivo | 10 | 3K | Powdered high-speed steel | TiCN | Heavy load | 8 | - | 0.5 ~ 7 | - | - | 44 ~ 99.9 | 2 ~ 7.9 | - | - | - | 2 ~ 7.9 | ||
1 | Preventivo | 10 | 3K | Powdered high-speed steel | TiCN | Heavy load | 10 | 40 ~ 100 | 0.5 ~ 9 | - | - | - | 2.5 ~ 9.9 | - | - | - | 2.5 ~ 9.9 | ||
1 | Preventivo | 10 | 3K | Powdered high-speed steel | TiCN | Heavy load | 10 | - | 0.5 ~ 9 | - | - | 44 ~ 99.9 | 2.5 ~ 9.9 | - | - | - | 2.5 ~ 9.9 | ||
1 | Preventivo | 10 | 3K | Powdered high-speed steel | TiCN | Heavy load | 13 | 40 ~ 100 | 0.5 ~ 12 | - | - | - | 3 ~ 12.9 | - | - | - | 3 ~ 12.9 | ||
1 | Preventivo | 10 | 3K | Powdered high-speed steel | TiCN | Heavy load | 13 | - | 0.5 ~ 12 | - | - | 44 ~ 99.9 | 3 ~ 12.9 | - | - | - | 3 ~ 12.9 | ||
1 | Preventivo | 10 | 3K | Powdered high-speed steel | TiCN | Heavy load | 16 | 40 ~ 100 | 0.5 ~ 15 | - | - | - | 4 ~ 15.9 | - | - | - | 4 ~ 15.9 | ||
1 | Preventivo | 10 | 3K | Powdered high-speed steel | TiCN | Heavy load | 16 | - | 0.5 ~ 15 | - | - | 44 ~ 99.9 | 4 ~ 15.9 | - | - | - | 4 ~ 15.9 | ||
1 | Preventivo | 10 | 3K | Powdered high-speed steel | TiCN | Heavy load | 20 | 40 ~ 100 | 0.5 ~ 19 | - | - | - | 5 ~ 19.9 | - | - | - | 5 ~ 19.9 | ||
1 | Preventivo | 10 | 3K | Powdered high-speed steel | TiCN | Heavy load | 20 | - | 0.5 ~ 19 | - | - | 44 ~ 99.9 | 5 ~ 19.9 | - | - | - | 5 ~ 19.9 | ||
1 | Preventivo | 10 | 3K | Powdered high-speed steel | TiCN | Heavy load | 25 | 40 ~ 100 | 0.5 ~ 24 | - | - | - | 6 ~ 24.9 | - | - | - | 6 ~ 24.9 | ||
1 | Preventivo | 10 | 3K | Powdered high-speed steel | TiCN | Heavy load | 25 | - | 0.5 ~ 24 | - | - | 44 ~ 99.9 | 6 ~ 24.9 | - | - | - | 6 ~ 24.9 | ||
1 | Preventivo | 10 | 3K | Powdered high-speed steel | TiCN | Standard | 4 | 40 ~ 80 | 0.5 ~ 3 | - | - | - | 2 ~ 3.9 | - | - | - | 2 ~ 3.9 | ||
1 | Preventivo | 10 | 3K | Powdered high-speed steel | TiCN | Standard | 4 | - | 0.5 ~ 3 | - | - | 37 ~ 79.9 | 2 ~ 3.9 | - | - | - | 2 ~ 3.9 | ||
1 | Preventivo | 10 | 3K | Powdered high-speed steel | TiCN | Standard | 5 | 40 ~ 80 | 0.5 ~ 4 | - | - | - | 2 ~ 4.9 | - | - | - | 2 ~ 4.9 | ||
1 | Preventivo | 10 | 3K | Powdered high-speed steel | TiCN | Standard | 5 | - | 0.5 ~ 4 | - | - | 37 ~ 79.9 | 2 ~ 4.9 | - | - | - | 2 ~ 4.9 | ||
1 | Preventivo | 10 | 3K | Powdered high-speed steel | TiCN | Standard | 6 | 40 ~ 80 | 0.5 ~ 5 | - | - | - | 2 ~ 5.9 | - | - | - | 2 ~ 5.9 | ||
1 | Preventivo | 10 | 3K | Powdered high-speed steel | TiCN | Standard | 6 | - | 0.5 ~ 5 | - | - | 37 ~ 79.9 | 2 ~ 5.9 | - | - | - | 2 ~ 5.9 | ||
1 | Preventivo | 10 | 3K | Powdered high-speed steel | TiCN | Standard | 8 | 40 ~ 100 | 0.5 ~ 7 | - | - | - | 2 ~ 7.9 | - | - | - | 2 ~ 7.9 | ||
1 | Preventivo | 10 | 3K | Powdered high-speed steel | TiCN | Standard | 8 | - | 0.5 ~ 7 | - | - | 37 ~ 99.9 | 2 ~ 7.9 | - | - | - | 2 ~ 7.9 | ||
1 | Preventivo | 10 | 3K | Powdered high-speed steel | TiCN | Standard | 10 | 40 ~ 100 | 0.5 ~ 9 | - | - | - | 2.5 ~ 9.9 | - | - | - | 2.5 ~ 9.9 | ||
1 | Preventivo | 10 | 3K | Powdered high-speed steel | TiCN | Standard | 10 | - | 0.5 ~ 9 | - | - | 37 ~ 99.9 | 2.5 ~ 9.9 | - | - | - | 2.5 ~ 9.9 | ||
1 | Preventivo | 10 | 3K | Powdered high-speed steel | TiCN | Standard | 13 | 40 ~ 100 | 0.5 ~ 12 | - | - | - | 3 ~ 12.9 | - | - | - | 3 ~ 12.9 | ||
1 | Preventivo | 10 | 3K | Powdered high-speed steel | TiCN | Standard | 13 | - | 0.5 ~ 12 | - | - | 37 ~ 99.9 | 3 ~ 12.9 | - | - | - | 3 ~ 12.9 | ||
1 | Preventivo | 10 | 3K | Powdered high-speed steel | TiCN | Standard | 16 | 40 ~ 100 | 0.5 ~ 15 | - | - | - | 4 ~ 15.9 | - | - | - | 4 ~ 15.9 | ||
1 | Preventivo | 10 | 3K | Powdered high-speed steel | TiCN | Standard | 16 | - | 0.5 ~ 15 | - | - | 37 ~ 99.9 | 4 ~ 15.9 | - | - | - | 4 ~ 15.9 | ||
1 | Preventivo | 10 | 3K | Powdered high-speed steel | TiCN | Standard | 20 | 40 ~ 100 | 0.5 ~ 19 | - | - | - | 5 ~ 19.9 | - | - | - | 5 ~ 19.9 | ||
1 | Preventivo | 10 | 3K | Powdered high-speed steel | TiCN | Standard | 20 | - | 0.5 ~ 19 | - | - | 37 ~ 99.9 | 5 ~ 19.9 | - | - | - | 5 ~ 19.9 | ||
1 | Preventivo | 10 | 3K | Powdered high-speed steel | TiCN | Standard | 25 | 40 ~ 100 | 0.5 ~ 24 | - | - | - | 6 ~ 24.9 | - | - | - | 6 ~ 24.9 | ||
1 | Preventivo | 10 | 3K | Powdered high-speed steel | TiCN | Standard | 25 | - | 0.5 ~ 24 | - | - | 37 ~ 99.9 | 6 ~ 24.9 | - | - | - | 6 ~ 24.9 | ||
1 | Preventivo | 10 | 3K | SKH51 Equivalent | TiCN | Standard | 4 | 40 ~ 80 | 0.5 ~ 3 | - | - | - | 2 ~ 3.9 | - | - | - | 2 ~ 3.9 | ||
1 | Preventivo | 10 | 3K | SKH51 Equivalent | TiCN | Standard | 4 | - | 0.5 ~ 3 | - | - | 37 ~ 79.9 | 2 ~ 3.9 | - | - | - | 2 ~ 3.9 | ||
1 | Preventivo | 10 | 3K | SKH51 Equivalent | TiCN | Standard | 5 | 40 ~ 80 | 0.5 ~ 4 | - | - | - | 2 ~ 4.9 | - | - | - | 2 ~ 4.9 | ||
1 | Preventivo | 10 | 3K | SKH51 Equivalent | TiCN | Standard | 5 | - | 0.5 ~ 4 | - | - | 37 ~ 79.9 | 2 ~ 4.9 | - | - | - | 2 ~ 4.9 | ||
1 | Preventivo | 10 | 3K | SKH51 Equivalent | TiCN | Standard | 6 | 40 ~ 80 | 0.5 ~ 5 | - | - | - | 2 ~ 5.9 | - | - | - | 2 ~ 5.9 | ||
1 | Preventivo | 10 | 3K | SKH51 Equivalent | TiCN | Standard | 6 | - | 0.5 ~ 5 | - | - | 37 ~ 79.9 | 2 ~ 5.9 | - | - | - | 2 ~ 5.9 | ||
1 | Preventivo | 10 | 3K | SKH51 Equivalent | TiCN | Standard | 8 | 40 ~ 100 | 0.5 ~ 7 | - | - | - | 2 ~ 7.9 | - | - | - | 2 ~ 7.9 | ||
1 | Preventivo | 10 | 3K | SKH51 Equivalent | TiCN | Standard | 8 | - | 0.5 ~ 7 | - | - | 37 ~ 99.9 | 2 ~ 7.9 | - | - | - | 2 ~ 7.9 | ||
1 | Preventivo | 10 | 3K | SKH51 Equivalent | TiCN | Standard | 10 | 40 ~ 100 | 0.5 ~ 9 | - | - | - | 2.5 ~ 9.9 | - | - | - | 2.5 ~ 9.9 | ||
1 | Preventivo | 10 | 3K | SKH51 Equivalent | TiCN | Standard | 10 | - | 0.5 ~ 9 | - | - | 37 ~ 99.9 | 2.5 ~ 9.9 | - | - | - | 2.5 ~ 9.9 |
Loading...
Type | Shoulder punch |
---|
Configura
Proprietà di base
Material
Surface treatment
Punch shank (mounting part) shape
D (Outer diameter)(mm)
L
A
B
C
LC
P
Q
R
S
W
Tipo
Tip shape
Filtrare per tipo dati CAD
Attributi opzionali