Some 200 Unite union members at David Brown Gear Systems in Lockwood Huddersfield staged a 24-hour strike on Friday of last week.
They struck over their annual pay claim, with the workers trying to keep up with inflation. Threatened changes to pay grades and the relatively good pension scheme are also adding to the feeling.
More than 30 pickets were outside the three main gates. The strike was solid at the shopfloor level, but it is unclear whether the 250 non-union members were keeping production going.