The Crest-to-Crest Wave Spring Series from Smalley (Lake Zurich, IL), which features the company’s C (imperial) and CM (metric) Series, has been expanded. Standard sizes are now available from stock down to 0.188 in and 5 mm in diameter. According to the company, these are the smallest wave springs on the market. Smalley’s engineering and manufacturing teams are able to design a custom solution for a customer’s application down to 0.157 in or 4 mm in diameter. “I was amazed when I saw our springs coiled up to 12 feet in diameter; what surprised me even more was how much engineering went into designing smaller,” said Darryl McBride, Smalley’s director of engineering.