Hitachi Stub Extensions with M4 thread (top and bottom) are intended toaccomodate shorter working distance in the SEM. Available in 12, 18, 25mm. Stub extensions can be stacked. Material: brass with stainless steel M4, complete with aluminum locking nut.
15373-2 - Short Stub Extension, 12mm, with Locking Nut
15365-2 - Medium Stub Extension, 18mm, with Locking Nut
15374-2 - Long Stub Extension, 25mm, with Locking Nut
15373-22 - M6 Locking Nut for Stub Extensions, Aluminum