Mathematics has always been one of the most challenging subjects for students of all ages. From simple arithmetic to complex ...

A tessellation is a repeating pattern of polygons that covers a plane with no gaps or overlaps. What kind of tessellations can you make out of regular polygons? What shapes tessellate? If shapes can ...

Cross threading occurs when the bolt is misaligned with the threads in the nut. It can destroy the threads, or cause the nut to jam. The standard beveled end process makes cross threading a ...

Functions and modules for creating metric (ISO) and English (UTS) standard screws and nuts. Included is a function for calculating the standard dimensions of screws including the tolerance values that ...