The Clamp Assembly,sidemount, cataloged under National Stock Number 1680-01-140-3891, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. The manufacturer of record is The Boeing Company Div Defense. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 1680-01-140-3891 |
| Primary Part Number | 74A542111-1003 |
| Item Name | Clamp Assembly,sidemount |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 74A542111-1003 | Aeroparts Machining, Llc Dba Warnkes Machining Co Llc (USA) |
| 74A542111-1003 PRIMARY | The Boeing Company Div Defense (USA) |
| 74A542111-1003 | Seyer Industries, Inc. Dba Seyer Industries Inc (USA) |
| 74A542111-1003 | Aerometals, Inc. (USA) |
| 74A542111-1003 | Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems (USA) |
| 74A542111-1003 | Associated Aircraft Manufacturing & Sales, Inc. Dba Associated Aircraft Manufacturing & Sales Inc (USA) |
| Reference | Meaning |
|---|---|
| 10302121 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 74A542111-1003 | 5/9 Secondary reference Connecticut College |
| 74A542111-1003 | 5/9 Secondary reference Comptech |
NSN 1680-01-140-3891 is a Clamp Assembly,sidemount, manufactured by The Boeing Company Div Defense, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
NSN 1680-01-140-3891 has 6 manufacturer part numbers on file: 74A542111-1003 (Aeroparts Machining, Llc Dba Warnkes Machining Co Llc), 74A542111-1003 (The Boeing Company Div Defense), 74A542111-1003 (Seyer Industries, Inc. Dba Seyer Industries Inc), 74A542111-1003 (Aerometals, Inc.), 74A542111-1003 (Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems) and 1 more.
1 possible match (shared part number, not a government interchangeability claim): 5935-01-145-4174. Verify interchangeability with system specifications before substitution.
Key specifications for 74A542111-1003: End Item Identification: AIRCRAFT MODEL F-18. 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 1680-01-140-3891 has DEMIL Code Q. 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.