Tucker Fasteners could close and up to 220 jobs go
Up to 220 jobs are at risk at a Birmingham manufacturing plant under plans to move production abroad.
Tucker Fasteners in Perry Barr could close, with fastening products being made in Giessen in Germany and Hopkinsville in the US instead.
Parent company Stanley Black & Decker (SBD) said a decrease in output and increased competition were to blame.
John Walsh from the union Unite said it was seeking urgent talks with the company to "save the site".
In a statement, SBD said the plant had generated "consistent losses since 1999" and operations in Birmingham would cease between January and March 2013 under the proposals.
It continued: "Volumes manufactured in Birmingham have decreased by almost 50% over the last 10 years as the plant has faced increased competition from low cost manufacturers, mostly from the Far East.
"Many industries have progressively migrated out of the United Kingdom, making the plant increasingly remote from its customer basis.
"Some service, sales and distribution activities would remain in Birmingham."
Mr Walsh added: "We haven't had formal consultation and I'm not going to pre-empt any negotiations.
"We need to sit down with the company to see what the problems are and whether or not we can reverse this decision."