The Viewer,night Vision, cataloged under National Stock Number 5855-01-554-9810, 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 Contour Metrological & Manufacturing, Inc Div Cmm Optic. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5855-01-554-9810 |
| Primary Part Number | 23172 |
| Item Name | Viewer,night Vision |
| FSC / FSG | 5855 / 58 — Night Vision Equipment, Emitted and Reflected Radiation |
| Manufacturer | Contour Metrological & Manufacturing, Inc Div Cmm Optic |
| Status | ACTIVE |
| 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 |
|---|---|
| 23172 | Acal Bfi Uk Ltd (GBR) |
| 23172 PRIMARY | Contour Metrological & Manufacturing, Inc Div Cmm Optic (USA) |
| Reference | Meaning |
|---|---|
| 23172 | 3/9 Design control — primary reference General Dynamics Global Imaging Technologies, Inc. Div Global Imaging Technologies |
NSN 5855-01-554-9810 is a Viewer,night Vision, manufactured by Contour Metrological & Manufacturing, Inc Div Cmm Optic, classified under FSC 5855, Night Vision Equipment, Emitted and Reflected Radiation. Status: active.
NSN 5855-01-554-9810 has 2 manufacturer part numbers on file: 23172 (Acal Bfi Uk Ltd), 23172 (Contour Metrological & Manufacturing, Inc Div Cmm Optic).
1 possible match (shared part number, not a government interchangeability claim): 5975-01-605-7461. Verify interchangeability with system specifications before substitution.
Key specifications for 23172: Special Features: MID WAVE 5X CONTINOUS ZOOM;100-500MM F/4; WITH 15UM PELICAN DETECTOR MM; Part Name Assigned by Controlling Agency: THERMAL CAMERA SYSTEM. 0 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.
NSN 5855-01-554-9810 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.