Miscellaneous Manufacturing

Miscellaneous manufacturing (NAICS 339) covers the production of medical devices, dental equipment, ophthalmic goods, jewelry, sporting goods, toys, office supplies, signs, and other specialized products that do not fit within the primary manufacturing subsectors. The medical device segment dominates — it accounts for the largest share of subsector revenue and is concentrated in the Minneapolis-St. Paul corridor (Medtronic, Boston Scientific, Abbott), Southern California (Edwards Lifesystems), and the Route 128 corridor around Boston (Hologic, Integra LifeSciences).

FDA regulatory requirements define the operating environment for the medical device companies that anchor this subsector. Class II and Class III devices require 510(k) clearance or premarket approval (PMA) respectively, creating multi-year development timelines and compliance costs that function as barriers to entry. The FDA Safety and Innovation Act (FDASIA) and the 21st Century Cures Act have modified the approval pathway, and the medical device excise tax — enacted, suspended, and repealed multiple times — illustrates the policy uncertainty manufacturers navigate.

Outside medical devices, the subsector includes Signet Jewelers and Tiffany (now LVMH-owned) in the jewelry segment, Rawlings (owned by Seidler Equity Partners) and Wilson Sporting Goods (owned by Amer Sports) in sporting goods, and Hasbro and Mattel in toys. These segments operate under Consumer Product Safety Commission (CPSC) regulations, including ASTM F963 toy safety standards and CPSIA lead and phthalate limits for children's products. Manufacturing in these categories has largely moved offshore, with domestic operations focused on design, prototyping, and specialty production.