driftpin
/ˈdrɪftˌpɪn/
noun
- A tapered metal pin used to align holes in metal parts before inserting a bolt or rivet.
- The mechanic used a driftpin to line up the bolt holes in the engine block.
- Before welding, the workers inserted a driftpin to hold the pieces in place.
- A set of driftpins is essential for any metalworking shop.