EXHIBIT 32(a)

                                  CERTIFICATION

      In connection with the accompanying Quarterly Report on Form 10-Q (the
"Report") of Lindsay Manufacturing Co. (the "Company") for the quarter ended
November 30, 2004, I, Richard W. Parod, Chief Executive Officer of the Company
and I, David B. Downing, Chief Financial Officer of the Company, hereby certify
pursuant to 18 U.S.C. Section 1350 as adopted pursuant to Section 906 of the
Sarbanes-Oxley Act of 2002, to my knowledge, that:

      (1)   the Report fully complies with the requirements of section 13(a) or
            15(d) of the Securities Exchange Act of 1934; and

      (2)   the information contained in the Report fairly presents, in all
            material respects, the financial condition and results of operations
            of the Company.

        /s/ RICHARD W. PAROD
        --------------------------------
        President and Chief Executive Officer
        Richard W. Parod

        /s/ DAVID B. DOWNING
        --------------------------------
        Vice President and Chief Financial Officer
        David B. Downing

        January 10, 2005

      A signed original of this written statement required by Section 906 has
been provided to the Company and will be retained by the Company and furnished
to the Securities and Exchange Commission or its staff upon request.

                                       25