A temporary injunction was obtained yesterday by Michael Butler, producer of the rock 'n' roll musical Hair, to restrain the League of new York Theaters from proceeding with the selection of nominees for this season's Tony awards.

The league's cut off date was yesterday.  If allowed to stand it would exclude Hair from consideration as a nominee.  The choices are made by a panel of drama critics.  Mr. Butler had announced the opening of the show at an undisclosed Broadway house for April 3.  It was previously seen at The Public Theater, 425 Lafyette Street, and at the Cheetah discotheque.

The critics were to submit their list of candidates to the league tomorrow.  They are voted on each year by 446 people.  The electors are members or employees of the league, the governing boards of Actors Equity, the Dramatists Guild, and the Society of Stage Directors and Choreographers, and critics on the first-night and second-night press lists.

Richard Barr, president of the league, said the original cut-off date of April 3 was advanced to yesterday because the later date didn't leave time to prepare for an April 21 telecast by the National Broadcasting Company.  Last years cut-off date was Feb. 18.

The temporary injunction was signed by Supreme Court Justice Arthur Markewich.  A hearing will be held tomorrow morning before Supreme Court Justice Joseph A. Sarafite to determine whether the injunction should be made permanent.

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