Total number of shares: 155 million. Harvard's holdings: 104,700 shares.

Raytheon Corp., Lexington, Mass.

Size: employees. 1983 sales: $5.51 billion.

Business: broad-based manufacturer of electronics and communications equipment and appliances.

Proxy vote: no new business in South Africa.

Annual meeting date: May 22.

South African operations: "Virtually nil," according to spokesman A. Newell Garden. A wholly-owned Raytheon subsidiary, Badger Co. of Cambridge, employees two Europeans who are working on a South African government plant to convert coal into synthetic oil. Raytheon has no equity interest in the company and does not have any factories there, Garden said.

Total number of shares: not available. Harvard's holdings: 110.276 shares.

U.S. Steel, Pittsburgh, Pa.

Size: 119,987 employees. 1983 sales: $18.91 billion.

Business: steel, chemical products, real estate, financial services.

Proxy vote: sign Sullivan Principals.

Annual meeting date: May 6.

South African operations: According to spokesman Bill Kestlen, U.S. Steel holds a minority equity interest in three small South African companies: Prieska Copper Mines, Feralloys, and Associated Manganese Minds of South Africa Ltd. The total number of employees of those companies is less than 100,000, Kestlen said, and U.S. Steel itself has no employees in the country. He added that a similar shareholder petition in 1981 was voted down.

Total number of shares: 107 million. Harvard's holdings: 79,500 shares.