Under a separate contract, B&W NOG will engage in disassembly and recovery of highly enriched uranium from nuclear reactors operated by the service.
"B&W NOG is pleased to continue its support of U.S. defense programs with these additional contracts," said B&W NOG President Peyton S. Baker.
"We realize the important role that B&W NOG's unique nuclear manufacturing and processing capabilities play in our nation's security, and are committed to providing reliable propulsion products as well as specialized nuclear materials services."
The two contracts are worth a total of $82 million.
Babcock and Wilcox Nuclear Operations Group said the components to be supplied are for steam generation.
B&W NOG is a subsidiary of the Babcock and Wilcox Co.