The Retainer,optical Element, cataloged under National Stock Number 1240-01-062-0815, 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 9 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1240-01-062-0815 |
| Primary Part Number | 12266752 |
| Item Name | Retainer,optical Element |
| FSC / FSG | 1240 / 12 — Optical Sighting and Ranging Equipment |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Style Designator | RECESSED |
| Setscrew Notch | NOT PROVIDED |
| Recess Depth | 0.070 INCHES NOMINAL IN |
| Recess Diameter | 3.080 INCHES MINIMUM AND 3.085 INCHES MAXIMUM IN |
| Thread Size | 3.250 IN.-32 IN |
| Guide Design | THREAD RELIEF |
| Internal Annular Serration | NOT PROVIDED |
| Material | ALUMINUM ALLOY 6061 |
| Hole Diameter | 2.887 INCHES MINIMUM AND 2.903 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 12266752 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 12266752 | 5/9 Secondary reference Drs Sustainment Systems, Inc. |
| 42075 | 5/2 Secondary reference U.S. Government activity |
NSN 1240-01-062-0815 is a Retainer,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 1240-01-062-0815 has 1 manufacturer part number on file: 12266752 (U S Army Tank Automotive Command Amsta-Im-Mm).
2 possible matches (shared part number, not a government interchangeability claim): 2915-01-295-0660, 2530-01-606-4576. Verify interchangeability with system specifications before substitution.
Key specifications for 12266752: Style Designator: RECESSED; Setscrew Notch: NOT PROVIDED; Overall Length: 0.125 INCHES NOMINAL IN; Recess Depth: 0.070 INCHES NOMINAL IN. 9 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 1240-01-062-0815 has DEMIL Code B. 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.