The Retainer,optical Element, cataloged under National Stock Number 1240-00-121-0797, 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 18 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 | 1240-00-121-0797 |
| Primary Part Number | 8289250 |
| 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 | PERISCOPE,TANK M32,M32C |
| Recess Angle in Deg | 90.0 |
| Hole or Slot Quantity | 2 |
| Drive Type | SLOTTED |
| Drive Facility Angular Spacing in Deg | 180.0 |
| Style Designator | RECESSED |
| Setscrew Notch | NOT PROVIDED |
| Material Document and Classification | WW-T-700/3 FED SPEC 1ST MATERIAL RESPONSE OR QQ-A-225/6 FED SPEC 1ST MATERIAL RESPONSE OR MIL-C-11866, COMP 3, T6 MIL SPEC 2ND MATERIAL RESPONSE OR QQ-A-200/8 FED SPEC 3RD MATERIAL RESPONSE OR QQ-A-225/8 FED SPEC 3RD MATERIAL RESPONSE OR QQ-A-250/11, T6 FED SPEC 3RD MATERIAL RESPONSE |
| Recess Depth | 0.070 INCHES NOMINAL IN |
| Guide Location | BOTH EDGES |
| Thread Size | 1.688 IN.-32UNS-2A A |
| Guide Design | THREAD CHAMFER |
| Surface Treatment | ANODIZE |
| Depth | 0.030 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN |
| Width | 0.062 INCHES MINIMUM AND 0.078 INCHES MAXIMUM IN |
| Internal Annular Serration | NOT PROVIDED |
| Material | ALUMINUM ALLOY 2024 OR ALUMINUM ALLOY 355.0 OR ALUMINUM ALLOY 6061 OR ALUMINUM ALLOY 6062 |
| Hole Diameter | 1.450 INCHES MINIMUM AND 1.460 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 |
|---|---|
| 8289250 PRIMARY | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate (USA) |
NSN 1240-00-121-0797 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 1240-00-121-0797 has 1 manufacturer part number on file: 8289250 (Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate).
Key specifications for 8289250: FSC Application Data: PERISCOPE,TANK M32,M32C; Recess Angle in Deg: 90.0; Hole or Slot Quantity: 2; Drive Type: SLOTTED. 18 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.