A GS-5 supply clerk for the Occupational Safety and Health Review Commission pleaded guilty in U.S. court here yesterday to a fraud scheme in which he ordered about $33,000 in non existent supplies from two fictitious companies he had organized.

Gary S. West, 23, of 208 Oneida St. NE. entered the plea before U.S. District Court Judge Oliver Gasch and will be sentenced later.

Assistant U.S. Attorney Raymond Banoun of the fraud division said West created the fictitious company of Telecomm Equipment Co., which allegedly was in the business of selling office supplies, and he also rented a post office box in th company's name.

Banoun said West then ordered supplies from the firm in his job with OSHA's office of contracts and procurements, and then certified the supplies had been received when they had not.

Subsequent checks totaling about $30,000 issued by OSHA to the firm then were deposited in a separate account West had opened for the firm and later transferred the funds to his own personal account.Banoun added. Much of the money was used by West to purchase stock through a broker age firm, Banoun said.

Although West pleaded guilty to conflict of interest charges concerning only Telecomm, Banoun said in court that West had set up a second fake firm - P&G Publications - from which he then ordered about $3,000 worth of non-existent books.