The Retainer,optical Element, cataloged under National Stock Number 1240-01-131-5319, 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 12 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 | 1240-01-131-5319 |
| Primary Part Number | 12309688 |
| 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 |
| Hole Chamfer Diameter | 1.2650 INCHES MINIMUM AND 1.2750 INCHES MAXIMUM IN |
| Style Designator | RECESSED |
| Setscrew Notch | NOT PROVIDED |
| Recess Depth | 0.1000 INCHES NOMINAL IN |
| Recess Diameter | 1.2650 INCHES MINIMUM AND 1.2750 INCHES MAXIMUM IN |
| Guide Location | BOTH EDGES |
| Hole Chamfer Angle in Deg | 45.0 |
| Thread Size | A1.3750 |
| Guide Design | THREAD CHAMFER |
| Internal Annular Serration | NOT PROVIDED |
| Material | STEEL CORROSION RESISTING |
| Hole Diameter | 1.1200 INCHES MINIMUM AND 1.1300 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 12309688 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 1240-01-131-5319 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 1240-01-131-5319 has 1 manufacturer part number on file: 12309688 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12309688: Hole Chamfer Diameter: 1.2650 INCHES MINIMUM AND 1.2750 INCHES MAXIMUM IN; Style Designator: RECESSED; Setscrew Notch: NOT PROVIDED; Overall Length: 0.2200 INCHES NOMINAL IN. 12 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 1240-01-131-5319 has DEMIL Code Q. 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.