The Retainer,optical Element, cataloged under National Stock Number 5855-01-172-2225, is classified within Federal Supply Class 5855 (Night Vision Equipment, Emitted and Reflected Radiation) of the Communication, Detection, and Coherent Radiation Equipment group. The manufacturer of record is Lockheed Martin Corporation. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5855-01-172-2225 |
| Primary Part Number | 13074672 |
| Item Name | Retainer,optical Element |
| FSC / FSG | 5855 / 58 — Night Vision Equipment, Emitted and Reflected Radiation |
| Manufacturer | Lockheed Martin Corporation |
| Status | ACTIVE |
| Hole or Slot Quantity | 4 |
| Drive Type | SLOTTED |
| Style Designator | RECESSED |
| Setscrew Notch | NOT PROVIDED |
| Material Document and Classification | MIL-P-46131,TYPE 3,CLASS 1 MIL SPEC SINGLE MATERIAL RESPONSE |
| Diameter | 1.500 INCHES NOMINAL IN |
| Recess Depth | 0.040 INCHES NOMINAL IN |
| Recess Diameter | 1.500 INCHES NOMINAL IN |
| Hole Chamfer Angle in Deg | 45.0 |
| Thread Size | AA1.500 |
| Guide Design | THREAD RELIEF |
| Internal Annular Serration | NOT PROVIDED |
| Material | PLASTIC POLYPHENYLENE OXIDE |
| Hole Diameter | 1.300 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | N |
| Part Number | Manufacturer |
|---|---|
| 13074672 PRIMARY | Lockheed Martin Corporation (USA) |
| Reference | Meaning |
|---|---|
| 13074672 | 5/9 Secondary reference Program Manager Advanced Attack Helicopter Barcom Amcpm-Aah |
NSN 5855-01-172-2225 is a Retainer,optical Element, manufactured by Lockheed Martin Corporation, classified under FSC 5855, Night Vision Equipment, Emitted and Reflected Radiation. Status: active.
NSN 5855-01-172-2225 has 1 manufacturer part number on file: 13074672 (Lockheed Martin Corporation).
1 possible match (shared part number, not a government interchangeability claim): 5998-01-706-4156. Verify interchangeability with system specifications before substitution.
Key specifications for 13074672: Hole or Slot Quantity: 4; Drive Type: SLOTTED; Style Designator: RECESSED; Setscrew Notch: NOT PROVIDED. 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.
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.