Tapped strips for electronic enclosures come in Custom lengths

ELMA ELECTRONIC Tapped strips for Eurocard extrusions and other electronics enclosures, provides drilled and tapped holes in 0.2″ internals along the steel strip. Devices are available in two cross sectional sizes, 2×6 and 1.8x5mm and with either M2.5 or M3 threads. Products allow front panels and other hardware to be screwed securely into the enclosure and the multiple attachment points are available to apply even pressure for EMI critical applications.

http://www.elma.com