Electrical
Trigger Plate 1x5
Used to trigger electrical events when stepped on.
Repair with Forged Iron, Mechanical Parts, and Electrical Parts.
Crafting
Craft at Workbench · makes 1
Harvest drops
Iron× 20-100
Taken apart with a harvesting tool (axe, pickaxe, shovel), before perks and tool bonuses.
Salvage drops
Extra parts when salvaged with a wrench, ratchet or impact driver.
When it collapses
Falling, it leaves 
Scrap Metal Pile (75% of the time) where it lands.