For exact technical specifications (wire diameter, spring rate, material), these suppliers offer searchable databases and CAD files.

: Sells a popular 200 Piece Assorted Spring Set for under $10, containing both extension and compression types. 3. Specialized Engineering Suppliers (Best for Precision)

and True Value often have individual "pick-it" bins for specific small springs, which is better if you only need one or two pieces. 2. Online Retailers (Best for Value & Assortments)

: A good source for "new old stock" or specific small lots of industrial-grade springs.