The 04T lithium-aluminum target elements that were irradiated at Hanford during the early part of 1963 indicated that a longer element would be more desirable from the standpoint of tritium production. The Production Fuels Sections was requested in late August, 1963, to manufacture a test load of ``O`` size elements that would be five inches in length. This document presents the manufacturing information that is necessary to make a finished target element five inches in length that will approximate the ``O`` size geomery with the existing supply of AlSi type aluminum components.