When you look at the MST 250 fuses from Schurter and need the Lead Length or Packaging information this can be found be looking in the Data Sheet
On the right side of the page in the variants section you will see a series of dots that indicates if the part is an S, L, or T.
These letters are calling out the packaging and lead length on the part.
S = Plastic Bag (100 pcs.) short 4.3 mm
L = Bulk (100 pcs.) long 18.8 mm
T = Taped 36 cm Reel (750 pcs.) long 18.8 mm
Applicable Part Numbers
486-1473-ND 486-1138-ND 486-1462-ND 486-1475-ND 486-1474-ND 486-1135-ND 486-1468-ND 486-1464-ND 486-1476-ND 486-1467-ND 486-1137-ND 486-2639-ND 486-2627-ND 486-1136-ND 486-1471-ND 486-1469-ND 486-1470-ND 486-1466-ND 486-1472-ND 486-1465-ND 486-1463-ND 486-2626-ND 486-2641-ND 486-1459-ND 486-1461-ND 486-2637-ND 486-2636-ND 486-2631-ND 486-1460-ND 486-2624-ND 486-3902-2-ND 486-2635-ND 486-2628-ND 486-2643-ND 486-2642-ND 486-2630-ND 486-2633-ND 486-2625-ND 486-2634-ND 486-2629-ND 486-2640-ND 486-3903-2-ND 0034.6813-ND 0034.6819-ND 0034.6806-ND 0034.6808-ND 0034.6809-ND 0034.6811-ND 0034.6814-ND 0034.6822-ND 0034.6807-ND 0034.6812-ND 0034.6817-ND 0034.6821-ND 0034.6823-ND 0034.6816-ND 0034.6818-ND 486-2632-ND 486-2638-ND 0034.6802-ND 486-2623-ND
0034.6620 0034.6618 0034.6605 0034.6622 0034.6621 0034.6612 0034.6611 0034.6607 0034.6623 0034.6610 0034.6617 0034.6719 0034.6707 0034.6615 0034.6616 0034.6613 0034.6614 0034.6609 0034.6619 0034.6608 0034.6606 0034.6706 0034.6721 0034.6602 0034.6604 0034.6717 0034.6716 0034.6711 0034.6603 0034.6704 0034.6815 0034.6715 0034.6708 0034.6723 0034.6722 0034.6710 0034.6713 0034.6705 0034.6714 0034.6709 0034.6720 0034.6820 0034.6813 0034.6819 0034.6806 0034.6808 0034.6809 0034.6811 0034.6814 0034.6822 0034.6807 0034.6812 0034.6817 0034.6821 0034.6823 0034.6816 0034.6818 0034.6712 0034.6718 0034.6802 0034.6703