Trusted US Assembly Hardware Supplier Since 1928!

Seastrom Manufacturing is an ISO 9001/AS 9100 certified custom manufacturer of standard & specialty washers and fasteners. Products made in the USA since 1928. Seastrom has the most comprehensive online catalog of standard washers and fasteners at www.seastrom-mfg.com. We stock over 44,000 part numbers, including round flat washers, shims, spacers, spring clips, shoulder washers, lock washers, clamps, brackets, expansion plugs and much more. We are also manufacture and supply pins, terminals & connectors. Same day shipping on stock items. Seastrom Manufacturing is also, a full service manufacturer with custom stamping, CNC machining, four-slide and screw machining capabilities. We have short and long run capabilities in both metallic and non-metallic materials. We also offer laser part marking, secondary operations, assembly and special packaging. Engineering and tool & die services are also available. DFARS compliant products are available. With Seastrom, we not only make quality parts, we help make quality products.