The Sleeve,mounting, cataloged under National Stock Number 1680-01-161-4166, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. The manufacturer of record is Mark Electronics Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 1680-01-161-4166 |
| Primary Part Number | 52040-2 |
| Item Name | Sleeve,mounting |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Manufacturer | Mark Electronics Inc |
| Status | ACTIVE |
| General Characteristics Item Description | 2.960 IN. LG; 1.400 IN. W; 0.748 IN. H; HOUSING ALUMINUM ALLOY 6063-T5 IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 52040-2 PRIMARY | Mark Electronics Inc (USA) |
| Reference | Meaning |
|---|---|
| 52040-2 | 5/9 Secondary reference Ducommun Labarge Technologies, Inc Dba Ducommun Labarge Technologies, Inc |
NSN 1680-01-161-4166 is a Sleeve,mounting, manufactured by Mark Electronics Inc, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
NSN 1680-01-161-4166 has 1 manufacturer part number on file: 52040-2 (Mark Electronics Inc).
1 possible match (shared part number, not a government interchangeability claim): 1680-01-622-1169. Verify interchangeability with system specifications before substitution.
Key specifications for 52040-2: General Characteristics Item Description: 2.960 IN. LG; 1.400 IN. W; 0.748 IN. H; HOUSING ALUMINUM ALLOY 6063-T5 IN; End Item Identification: ACFT MODEL F-18. 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.
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.