====== Fasteners ======

  * [[UNC_UNF|UNC and UNF threads, dimensions]]
  * [[https://ntrs.nasa.gov/api/citations/19900009424/downloads/19900009424.pdf|NASA's fasteners manual PDF]] / [[https://ntrs.nasa.gov/citations/19900009424|Page]]
  * [[https://www.boltscience.com/pages/basics1.htm|Bolt Science]]