Shelagh Fogarty is Leading Britain's Conversation.
17 January 2017, 17:23
What does a screw washer do? (This one came straight from James)
When you put a screw through a hole, what does the washer do?
Name: Ian, Welling
Qualification:Restores old cars
Answer: If you’re bolting something to a soft material like a plastic in the interior of your car, it spreads the load and it stops the bolt pulling through otherwise you’d need a very large bolt head.