Can anybody name these?

[hotponyshoes]

I need to match these up,
Anybody recognize them?

 

[m_c]

Index plunger/bolt

I'd start with a look around on wds - Index Plungers & Bolts | Retractable Spring Plungers | WDS (wdscomponents.com)

 

[mart]

They look a bit like adjustable legs for kitchen base units?