NSN 1240-00-931-8901
Part Details | OPTICAL ELEMENT RETAINING RING
1240-00-931-8901 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: 7791929, 1240-00-931-8901, 00-931-8901, 1240009318901, 009318901
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 12 | APR 29, 1968 | 00-931-8901 | 22585 ( RING, RETAINING, OPTICAL ELEMENT ) |
REFERENCE DRAWINGS & PICTURES
Cross Reference | NSN 1240-00-931-8901
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 7791929 | 19200 | US ARMY ARDEC RDECOM |
Technical Data | NSN 1240-00-931-8901
| Characteristic | Specifications |
|---|---|
| THREAD LOCATION | INTERNAL |
| THREAD SIZE | 1.312 IN.-48 |
| SCREW THREAD SERIES DESIGNATOR | UNS |
| THREAD CLASS | 3B |
| THREAD LENGTH | 0.200 INCHES |
| THREAD DIRECTION | RIGHT-HAND |
| OVERALL LENGTH | 0.340 INCHES MINIMUM AND 0.341 INCHES MAXIMUM |
| OUTSIDE DIAMETER | 1.377 INCHES MINIMUM AND 1.385 INCHES MAXIMUM |
| INTERNAL FLANGE THICKNESS | 0.060 INCHES MINIMUM AND 0.080 INCHES MAXIMUM |
| INNER GROOVE WIDTH | 0.050 INCHES MINIMUM AND 0.070 INCHES MAXIMUM |
| GROOVE DIAMETER | 1.322 INCHES MINIMUM AND 1.330 INCHES MAXIMUM |
| APERTURE DIAMETER | 0.880 INCHES MINIMUM AND 0.920 INCHES MAXIMUM |
| GROOVE LOCATION | ADJACENT TO INTERNAL FLANGE |
| SPECIAL FEATURES | DRILLED FACE DRIVE TYPE,TWO 0.077 IN. DIA. HOLES SPACED 180 DEG APART ON A 1.156 IN. BOLT CIRCLE DIA. ON INTERNAL FLANGE END. |
| FSC APPLICATION DATA | SIGHT,REFLEX |
