The Dunkleosteus was an armoured fish with a length of eight to ten metres, which was unusually large for the Devonian period. It was one of the first giants of the underwater world, together with the Titanichthys.<br><br>The Dunkleosteus lived 130-150 million years before the first dinosaurs. It was a fearless hunter who could snap incredibly fast and ate large sharks, and even its own kind if no other prey was to be found.
Fossils of fish, which were only half digested, have often been discovered alongside its skeleton. Scientists therefore believe that the armoured fish was not able to chew very well and swallowed it prey in large pieces. It was named after the palaeontologist David Dunkle.
The word "osteos" is Greek for "bone". This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-053-7804, indicating validated use in U.S. government and defense logistics supply chains.
| color | BLUE FIRST SIDE INSCRIPTION |
| width | 1.000 INCHES NOMINAL IN |
| length | 1.120 INCHES NOMINAL IN |
| cushion | NOT INCLUDED |
| material | RUBBER SILICONE CLASS Q OVERALL |
| nut_style | SINGLE BALL SEAT, HEXAGON |
| thickness | 0.020 INCHES NOMINAL IN |
| nut_height | 0.875 INCHES NOMINAL IN |
| body_length | 0.260 INCHES MAXIMUM IN |
| mounting_pad | NOT INCLUDED |
| thread_class | 2B |
| overall_width | 0.375 INCHES NOMINAL IN |
| NSN | 5310-00-053-7804 |
| WIDTH ACROSS FLATS | 1.480 INCHES MINIMUM AND 1.505 INCHES MAXIMUM IN |
| THREAD QUANTITY PER INCH | 16 |
| NOMINAL THREAD SIZE | 0.750 INCHES IN |
| THREAD SERIES | UNF |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| SURFACE TREATMENT | CADMIUM OR ZINC OVERALL |
| NUT STYLE | SINGLE BALL SEAT, HEXAGON |
| THREAD DIRECTION | LEFT-HAND |
| MATERIAL | STEEL COMP 1120 OVERALL |
| BALL SEAT RADIUS | 0.875 INCHES NOMINAL IN |