Litton will sell most of its financial-services unit.

Litton Industries Credit, a commercial finance and leasing operation that provides equipment financing to middle-market firms throughout the East, South and Midwest, will be sold to Metropolitan Life Insurance for an unspecified price. The credit unit’s assets are about $387 million, or the bulk of the $592.6 million in assets of Litton’s entire financial-services division as of last July.