A spacer used in the assembly of uranium fuel elements for the Boiling Water Reactors (BWR) used in a number of Westinghouse nuclear generating sites. The spacer and the fuels are produced by the Allmanna Svenska Elektriska Aktiebolaget (ASEA-ATOM) organization located in Vasteras, Sweden. The open-mesh spacer has a 6 cm square cross-section and is 5 cm in length.