The Retainer,optical Element, cataloged under National Stock Number 1240-00-291-3570, is classified within Federal Supply Class 1240 (Optical Sighting and Ranging Equipment) of the Fire Control Equipment group. The manufacturer of record is Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate. Government technical data includes 16 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 | 1240-00-291-3570 |
| Primary Part Number | 7583446 |
| Item Name | Retainer,optical Element |
| FSC / FSG | 1240 / 12 — Optical Sighting and Ranging Equipment |
| Manufacturer | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate |
| Status | ACTIVE |
| FSC Application Data | TELESCOPE,STRAIGHT M86F |
| Hole or Slot Quantity | 2 |
| Drive Type | SLOTTED |
| Counterbore Taper Angle in Deg | 60.0 |
| Style Designator | RECESSED |
| Setscrew Notch | PROVIDED |
| Material Document and Classification | QQ-A-354, COND T-CANCELED FED SPEC SINGLE MATERIAL RESPONSE |
| Recess Depth | 0.150 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN |
| Recess Diameter | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN |
| Thread Size | 0.648 IN.-48NS-3A A |
| Surface Treatment | ANODIZE |
| Depth | 0.050 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN |
| Width | 0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN |
| Internal Annular Serration | NOT PROVIDED |
| Material | ALUMINUM ALLOY 2024 |
| Hole Diameter | 0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 7583446 PRIMARY | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate (USA) |
NSN 1240-00-291-3570 is a Retainer,optical Element, manufactured by Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate, classified under FSC 1240, Optical Sighting and Ranging Equipment. Status: active.
NSN 1240-00-291-3570 has 1 manufacturer part number on file: 7583446 (Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate).
Key specifications for 7583446: FSC Application Data: TELESCOPE,STRAIGHT M86F; Hole or Slot Quantity: 2; Drive Type: SLOTTED; Counterbore Taper Angle in Deg: 60.0. 16 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.
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.