The Thermal Imaging System, cataloged under National Stock Number 5855-01-558-4523, 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 Teledyne Flir, Llc Div Corporate. Government technical data includes 1 specification, 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 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 | 5855-01-558-4523 |
| Primary Part Number | 18400-257 |
| Item Name | Thermal Imaging System |
| FSC / FSG | 5855 / 58 — Night Vision Equipment, Emitted and Reflected Radiation |
| Manufacturer | Teledyne Flir, Llc Div Corporate |
| Status | ACTIVE |
| Nonsupply Items and Quantities | 64869 21240-250 S.G.A.1; 64869 18528-251 E.C.U. 1; 64869 18217-200 H.C.U. 1; 64869 18770-000 REV A. EARTH STRAP 1; 64869 18704-007 REV 1 OPERATORS MANUAL 1; 64869 18703-007 REV. 1. QUICK REFERENCE GUIDE 1; 64869 LCD 1004-140 MONITOR, 10.4 IN. LCD 1 IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 18400-257 PRIMARY | Teledyne Flir, Llc Div Corporate (USA) |
NSN 5855-01-558-4523 is a Thermal Imaging System, manufactured by Teledyne Flir, Llc Div Corporate, classified under FSC 5855, Night Vision Equipment, Emitted and Reflected Radiation. Status: active.
NSN 5855-01-558-4523 has 1 manufacturer part number on file: 18400-257 (Teledyne Flir, Llc Div Corporate).
1 possible match (shared part number, not a government interchangeability claim): 5855-01-569-3979. Verify interchangeability with system specifications before substitution.
Key specifications for 18400-257: Nonsupply Items and Quantities: 64869 21240-250 S.G.A.1; 64869 18528-251 E.C.U. 1; 64869 18217-200 H.C.U. 1; 64869 18770-000 REV A. EARTH STRAP 1; 64869 18704-007 REV 1 OPERATORS MANUAL 1; 64869 18703-007 REV. 1. QUICK REFERENCE GUIDE 1; 64869 LCD 1004-140 MONITOR, 10.4 IN. LCD 1 IN; Special Features: INCLUDES 1 GASKET; 50 HZ. R6; Part Name Assigned by Controlling Agency: SEAFLIR II-C SYSTEM. 1 specification is 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 5855-01-558-4523 has DEMIL Code D. 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.