The Function Module, cataloged under National Stock Number 4920-01-641-4697, is classified within Federal Supply Class 4920 (Aircraft Maintenance and Repair Shop Specialized Equipment) of the Maintenance and Repair Shop Equipment group. The manufacturer of record is Lockheed Martin Corporation Div Rms. The record lists 7 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Function Module |
| FSC / FSG | 4920 — Aircraft Maintenance and Repair Shop Specialized Equipment (FSG 49) |
| Manufacturers | Lockheed Martin Corporation Div Rms (CAGE 02769); Mercury Systems Inc Dba Mercury Systems, Inc (CAGE 3X893); Mercury Systems, Inc. Dba Mercury Systems, Inc (CAGE 3E5E2); Naval Sea Systems Command (CAGE 53711) |
| Parameter | Value |
|---|---|
| NSN | 4920-01-641-4697 |
| Primary Part Number | 20528732-11 |
| Item Name | Function Module |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Lockheed Martin Corporation Div Rms |
| 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 |
|---|---|
| 20528732-11 PRIMARY | Lockheed Martin Corporation Div Rms (USA) |
| 910-61003 REV.1K | Mercury Systems Inc Dba Mercury Systems, Inc (USA) |
| 910-61003 REV 1L PRIMARY | Mercury Systems, Inc. Dba Mercury Systems, Inc (USA) |
| 910-61003 | Mercury Systems, Inc. Dba Mercury Systems, Inc (USA) |
| 8431025-11 | Naval Sea Systems Command (USA) |
| 910-61003 REV 1L | Mercury Systems Inc Dba Mercury Systems, Inc (USA) |
| 910-61003 PRIMARY | Mercury Systems Inc Dba Mercury Systems, Inc (USA) |
| Reference | Meaning |
|---|---|
| 8431025/REV R SHEET 4 | D/9 Drawing number reference only Naval Sea Systems Command |
| 910-61003 REV.1H | 5/9 Secondary reference Mercury Systems Inc Dba Mercury Systems, Inc |
| 910-61003 REV.1G | 5/9 Secondary reference Mercury Systems Inc Dba Mercury Systems, Inc |
| 20528732/SHEET 4 | D/9 Drawing number reference only Lockheed Martin Corporation Div Rms |
NSN 4920-01-641-4697 is a Function Module, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4920-01-641-4697 has 7 manufacturer part numbers on file: 20528732-11 (Lockheed Martin Corporation Div Rms), 910-61003 REV.1K (Mercury Systems Inc Dba Mercury Systems, Inc), 910-61003 REV 1L (Mercury Systems, Inc. Dba Mercury Systems, Inc), 910-61003 (Mercury Systems, Inc. Dba Mercury Systems, Inc), 8431025-11 (Naval Sea Systems Command) and 2 more.
2 possible matches (shared part number, not a government interchangeability claim): 1285-01-641-4959, 5998-01-642-5371. Verify interchangeability with system specifications before substitution.
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 4920-01-641-4697 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.