An externally threaded fastener which does not require a nut to secure the fastened joint. A narrow, non-crystalline discontinuity, which is usually inherent in the raw material. Seams are usually straight or smooth-curved line discontinuities running parallel to the product axis. That portion of a headed fastener that lies between the head and the point. Force that tends to divide an object along a plane parallel to the opposing stresses.
Shear strength is measured in terms of pounds or kilonewtons.
Selected area or areas used to calculate the tensile strength of an externally threaded fastener, so the fastener strength is consistent with the material strength. It corrects for the notch and helix effect of the threads and is a function of the pitch and minor diameters. This measurement is usually expressed as a percentage and is used to determine optimal hole size. The angle between the flank of the thread and a line perpendicular to the axis. Measures the resistance of material to plastic deformation.