Miniature Non - standard Cap Screws: These are very small in size, usually with a diameter of a few millimeters and a short length. They are used in precision instruments, electronics, and miniature mechanical devices. The non - standard nature may lie in extremely tight tolerances for the diameter and length to fit into very small spaces and interact with miniature components.
Large - Sized Non - standard Cap Screws: As the name implies, they have a large diameter and length. These are used in heavy - duty applications such as construction machinery, large - scale industrial equipment, and infrastructure projects. The non - standard features could include custom - made lengths to fit specific structural members or non - standard diameters to match oversized holes or shafts.