NSN 1240-01-054-5789
Part Details | OPTICAL ELEMENT RETAINING RING
1240-01-054-5789 A cylindrical item having an internally flanged diameter designed to retain a lens or window in the objective end, or a diopter scale at the viewing end of an optical instrument. It may have one or more of the following characteristics: internal thread or machined for a press fit, method of securing, and/or knurled periphery. For externally threaded items, see RETAINER, OPTICAL ELEMENT. Excludes CELL, OPTICAL ELEMENT; NUT, PLAIN KNURLED; NUT, PLAIN ROUND; and RING, RETAINING.
Alternate Parts: 10556096, 1240-01-054-5789, 01-054-5789, 1240010545789, 010545789
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 12 | JAN 21, 1978 | 01-054-5789 | 22585 ( RING, RETAINING, OPTICAL ELEMENT ) |
REFERENCE DRAWINGS & PICTURES
Cross Reference | NSN 1240-01-054-5789
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 10556096 | 19200 | US ARMY ARDEC RDECOM |
Technical Data | NSN 1240-01-054-5789
| Characteristic | Specifications |
|---|---|
| MATERIAL | 4$DAL6061 |
| MATERIAL DOCUMENT AND CLASSIFICATION | AQQ-A-225 TO 8, ALLOY 6061, T6$AWW-T-700 TO 3, ALLOY 2024, T3$AWW-T-700 TO 6, ALLOY 6061, T6 1ST MATERIAL RESPONSE |
| SURFACE TREATMENT | ANODIZE |
| THREAD LOCATION | INTERNAL |
| THREAD SIZE | 2 1/2-28 |
| SCREW THREAD SERIES DESIGNATOR | UNS |
| THREAD CLASS | 2B |
| THREAD LENGTH | 0.172 INCHES |
| THREAD DIRECTION | RIGHT-HAND |
| OUTSIDE DIAMETER | 2.688 INCHES NOMINAL |
| INTERNAL FLANGE THICKNESS | 1.750 INCHES NOMINAL |
| INNER GROOVE WIDTH | 0.078 INCHES NOMINAL |
| GROOVE DIAMETER | 2.490 INCHES NOMINAL |
| APERTURE DIAMETER | 2.406 INCHES NOMINAL |
| GROOVE LOCATION | INSIDE END OF THREAD |