Buying a foreclosed house can mean you get a great deal, but there are some things to watch out for, too.
10 most extreme places on Earth. Pitch diameter is a term used to take measurements of the diameter of a gear or a screw using pitch points. Pitch points on a gear could be found if a straight line were drawn up from two of the gear's teeth located side by side and the two lines were connected by a curve.
It may be given as the number of threads per unit length, or it may be given as the distance between threads (also called the thread pitch). For Unified threads, the number given is threads per inch. For instance, a 1/4-20 screw has 20 threads per inch. For metric threads, the thread pitch is given in millimeters per thread. Thus, an M2 x 0.4 screw has threads every 0.4mm. Although most metric fasteners have two or more standard pitches (fine & coarse threads), the pitch is often omitted from a thread callout; it is always helpful to carry a sample with you to the hardware store.