A screw thread, often shortened to thread, is a helical structure used to convert between rotational and linear movement or force. A screw thread is a ridge wrapped around a cylinder or cone in the form of a helix, with the former being called a straight thread and the latter called a tapered thread. A screw thread is the essential feature of the screw as a simple machine and also as a fastener. The mechanical advantage of a screw thread depends on its lead, which is the linear distance the screw travels in one revolution.
Sour cream is a dairy product with a short shelf life. Typically it is good for 2 to 3 weeks from when purchased. Always check the expiration date on the container.
Quick Answer. If unopened and left in a pantry, Miracle Whip can last for a week past its use-by date; if opened, it can last for a month past its use-by date if refrigerated before it goes bad. A person should also check other dates on a jar of mayonnaise, such as the sell-by or best before dates. Keep Learning.