190 likes | 284 Views
Threads, Fasteners & Springs. Use of Screw Threads. To hold parts together To adjust parts with reference to each other To transmit power. Screw Thread Terms. Important Terms.
E N D
Use of Screw Threads • To hold parts together • To adjust parts with reference to each other • To transmit power
Important Terms • PITCH:The distance from a point on a screw thread to a corresponding point on the next thread measured parallel to the axis. The pitch P is equal to 1 divided by the number of threads per inch. • LEAD: The distance a screw thread advances in one turn. • Thread Form: The cross section of thread cut by a plane containing the axis.
Thread Symbols There are three methods of representing screw threads on drawings: • Detailed • Simplified • Schematic