The Cell,optical Element, cataloged under National Stock Number 1240-01-079-9839, is classified within Federal Supply Class 1240 (Optical Sighting and Ranging Equipment) of the Fire Control Equipment group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1240-01-079-9839 |
| Primary Part Number | 12266782 |
| Item Name | Cell,optical Element |
| FSC / FSG | 1240 / 12 — Optical Sighting and Ranging Equipment |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-STD-171, 7.2.2 MIL SPEC SINGLE TREATMENT RESPONSE |
| Overall Diameter | 5.088 INCHES MINIMUM AND 5.090 INCHES MAXIMUM IN |
| Eccentric Construction | NOT PROVIDED |
| Thread Pitch Diameters | +4.7917 TO 4.7983 INCHES AND +4.8895 TO 4.8942 INCHES IN |
| Thread Length | 4.812 INCHES AND 4.916 INCHES IN |
| Thread Location | EXTERNAL |
| Chamfer Location | THREADED END |
| Thread Direction | RIGHT-HAND |
| Chamfer Size | 0.030 IN. BY 45 DEG IN |
| Thread Size | 4.812-32 AND 4.916-32 |
| Screw Thread Series Designator | UNS |
| Surface Treatment | ANODIZE |
| Thread Class | 2B AND 2A A |
| Material | ALUMINUM ALLOY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 12266782 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 1240-01-079-9839 is a Cell,optical Element, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 1240, Optical Sighting and Ranging Equipment. Status: active.
NSN 1240-01-079-9839 has 1 manufacturer part number on file: 12266782 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12266782: Surface Treatment Document and Classification: MIL-STD-171, 7.2.2 MIL SPEC SINGLE TREATMENT RESPONSE; Overall Diameter: 5.088 INCHES MINIMUM AND 5.090 INCHES MAXIMUM IN; Eccentric Construction: NOT PROVIDED; Thread Pitch Diameters: +4.7917 TO 4.7983 INCHES AND +4.8895 TO 4.8942 INCHES IN. 14 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 1240-01-079-9839 has DEMIL Code D. Demilitarization may be required before disposal or transfer to non-military entities.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.