Fralock Holdings, a Valencia manufacturer for the aerospace, defense and medical industries, has acquired Lenthor Engineering Inc. Financial terms of the transaction were not disclosed.

It is the second acquisition announced this month for Fralock. Earlier it had said it was acquiring Ceramic Tech Inc., which manufactures and fabricates ceramic parts as well as performing pre-fired machining and quartz grinding.

Lenthor, in Milpitas, is one of the largest private companies in the U.S. that designs, manufactures and assembles flexible and rigid flex printed circuit boards for the aerospace, medical and communications industries.

Marc Haugen, chief executive of Fralock, said that Lenthor’s advanced capabilities in flexible circuit design and manufacturing complements Fralock’s core business.

“We believe that Lenthor’s expertise and strong executive team, as well as its strong strategic customer relationships especially in our overlapping market segments, makes Lenthor an excellent addition to our expanding engineered materials solutions platform,” Haugen said in a statement.

The acquisition adds more than 160 new employees to Fralock, the company said.

Fralock was founded in 1967 and is owned by Arsenal Capital Partners, a New York private equity firm.