78858: WASHER,FLAT.
- Special filter with ultra-flat rotary mount (4.5 mm) - Protects the lens against scratches, dust and fingerprints, also serves as UV filter - For wide-angle and wide-angle zoom lenses, especially for fast AF lenses with integrated motor drive or front lens focus - No vignetting (dark shading of picture corners) - New, optical glass of superior quality (only 1 mm thick) - From a focal length of 17 mm (with miniature photographs) - Very low weight - Multi-layer coating (HTMC): four layers of coating are vapour-deposited on each side - Quality standard (glass): professional - Puts contrast and depth in the picture, the sky gets blue, the clouds get white and the colours become clearer - Depending on the position of the filter, non-metallic reflections (water, plastic, glass, etc.) are removed - The best effect is achieved with a shooting angle of 30-40° to the reflective surface This part is cataloged in the U.S. Government catalog under NSN 5320-00-147-1552, indicating validated use in U.S. government and defense logistics supply chains.
| material | STEEL OVERALL |
| thickness | 0.026 INCHES NOMINAL IN |
| head_style | FLAT/TINNER'S |
| head_height | 0.062 INCHES NOMINAL IN |
| shank_style | STRAIGHT |
| hole_diameter | 0.109 INCHES NOMINAL IN |
| heat_treatment | ANNEALED OVERALL |
| shank_diameter | 0.188 INCHES NOMINAL IN |
| fastener_length | 0.375 INCHES NOMINAL IN |
| overall_diameter | 0.250 INCHES NOMINAL IN |
| head_major_diameter | 0.312 INCHES NOMINAL IN |
| peripheral_shape_style | ROUND |
| NSN | 5320-00-147-1552 |
| SHANK DIAMETER | 0.188 INCHES NOMINAL IN |
| HEAD HEIGHT | 0.062 INCHES NOMINAL IN |
| FASTENER LENGTH | 0.375 INCHES NOMINAL IN |
| HEAT TREATMENT | ANNEALED OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 7225 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| HEAD STYLE | FLAT/TINNER'S |
| SHANK STYLE | STRAIGHT |
| MATERIAL | STEEL OVERALL |
| HEAD MAJOR DIAMETER | 0.312 INCHES NOMINAL IN |
No substitute or cross-reference records for this part.