The Retainer,optical Element, cataloged under National Stock Number 5855-01-351-8909, 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 Dept of the Army U S Army Electronics Command Night Vision Laboratory. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5855-01-351-8909 |
| Primary Part Number | 5003387 |
| Item Name | Retainer,optical Element |
| FSC / FSG | 5855 / 58 — Night Vision Equipment, Emitted and Reflected Radiation |
| Manufacturer | Dept of the Army U S Army Electronics Command Night Vision Laboratory |
| Status | ACTIVE |
| FSC Application Data | NIGHT VISION EQUIPMENT,EMITTED AND REFLECTED RADIATION |
| Drive Type | KNURL |
| Hole Chamfer Diameter | 1.250 INCHES MINIMUM AND 1.255 INCHES MAXIMUM IN |
| Style Designator | RECESSED |
| Setscrew Notch | NOT PROVIDED |
| Recess Depth | 0.252 INCHES NOMINAL IN |
| Recess Diameter | 1.270 INCHES NOMINAL IN |
| Guide Location | BOTH EDGES |
| Hole Chamfer Angle in Deg | 45.0 |
| Guide Design | THREAD CHAMFER |
| Internal Annular Serration | PROVIDED |
| Material | ALUMINUM ALLOY 2011 |
| Hole Diameter | 1.100 INCHES MINIMUM AND 1.101 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 |
NSN 5855-01-351-8909 is a Retainer,optical Element, manufactured by Dept of the Army U S Army Electronics Command Night Vision Laboratory, classified under FSC 5855, Night Vision Equipment, Emitted and Reflected Radiation. Status: active.
NSN 5855-01-351-8909 has 2 manufacturer part numbers on file: BP15621 (Burke Products Inc), 5003387 (Dept of the Army U S Army Electronics Command Night Vision Laboratory).
1 possible match (shared part number, not a government interchangeability claim): 1630-01-564-1089. Verify interchangeability with system specifications before substitution.
Key specifications for 5003387: FSC Application Data: NIGHT VISION EQUIPMENT,EMITTED AND REFLECTED RADIATION; Drive Type: KNURL; Hole Chamfer Diameter: 1.250 INCHES MINIMUM AND 1.255 INCHES MAXIMUM IN; Style Designator: RECESSED. 13 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.