71308: BEARING,BALL,ANNULAR.
- Ideal lens protection from optical glass, colour-neutral - MC8 coating: four layers on each side, for excellent permeability to light and maximum anti-reflective properties - Vapour-deposited, multi-layer coating - Scratch-resistant - Filter front and back are coated, ensuring no loss of contrast or brilliance and preventing ghosting and double images - Ultra-thin, wide mount: prevents vignetting, can remain on the lens permanently - Barely increases the lens front section - A protected front lens saves expensive repair costs - Quality class (glass): optical glass - Filter mount made from black anodised metal and blackened inner edges to prevent reflections - Edge sealant protects against soiling - Stable shape of the mount despite temperature fluctuations This part is cataloged in the U.S. Government catalog under NSN 3110-00-554-5966, indicating validated use in U.S. government and defense logistics supply chains.
| criticality_code_justification | ZZZY |
| reference_number_differentiating_characteristics | MATERIAL WILL BE IN ACCORDANCE WITH NAVICP ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATION |
| NSN | 3110-00-554-5966 |
| RETAINER FABRICATION METHOD | PRESSED |
| SURFACE FINISH | GROUND |
| SHIELD QUANTITY | 1 |
| STYLE DESIGNATOR | LOADING GROOVE, NON-SEPARABLE |
| OVERALL WIDTH | 23.0 MILLIMETERS NOMINAL MM |
| OVERALL OUTSIDE DIAMETER | 90.00 MILLIMETERS NOMINAL MM |
| BORE SHAPE | STRAIGHT |
| LOAD DIRECTION | RADIAL |
| STANDARD TOLERANCE DESIGNATION | AFBMA STD TOLERANCE FOR BALLS, GRADE 5 |
| BORE DIAMETER | 40.00 MILLIMETERS NOMINAL MM |