AR-8: BEARING,PLAIN,ROD END.
This educational maths puzzle helps children to learn to count up to 59. Children will have plenty of fun solving the problems on each puzzle piece. In this puzzle, there are 58 problems and pieces with curved edges, matching the correct space in the frame.
The numbers are written in bold, eye-catching colours, designed to catch the puzzlers attention. In the bottom left-hand corner, you will find a decorative picture of an elephant, providing an element of art to the puzzle. The curved edged pieces encourage both hand and eye coordination as it is best suited towards slightly older children learning to add.
This part is cataloged in the U.S. Government catalog under NSN 3120-00-171-4489, indicating validated use in U.S. government and defense logistics supply chains.
| design_type | SOLID |
| holder_type | RIGHT-HAND |
| cutting_tool_shape | DIAMOND |
| spring_type_feature | NOT INCLUDED |
| cutter_tool_accommodated | CUTTER BIT |
| NSN | 3120-00-171-4489 |
| SHANK THREAD LENGTH | 1.1875 INCHES NOMINAL IN |
| BORE CENTER TO SHANK END DISTANCE | 2.1150 INCHES MINIMUM AND 2.1350 INCHES MAXIMUM IN |
| INNER MEMBER WIDTH | 0.6200 INCHES MINIMUM AND 0.6250 INCHES MAXIMUM IN |
| OUTER MEMBER WIDTH | 0.4950 INCHES MINIMUM AND 0.5050 INCHES MAXIMUM IN |
| STYLE DESIGNATOR | BALL TYPE |
| THREAD DIAMETER | 0.500 INCHES NOMINAL IN |
| OVERALL LENGTH | 2.7810 INCHES NOMINAL IN |
| LUBRICATION FEATURE | GROOVE INTERNAL OUTER MEMBER |
| SHANK WIDTH ACROSS WRENCH FLATS | 0.8750 INCHES NOMINAL IN |
| FEATURES PROVIDED | SCREW PLUG CLOSURE FITTING |