The Wiring Harness,pylon, cataloged under National Stock Number 1680-01-154-8939, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. The manufacturer of record is Meggitt Safety Systems 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. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1680-01-154-8939 |
| Primary Part Number | 6644 |
| Item Name | Wiring Harness,pylon |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Manufacturer | Meggitt Safety Systems Inc |
| Status | ACTIVE |
| FSC Application Data | AIRCRAFT ACCESSORY EQUIPMENT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 6644 PRIMARY | Meggitt Safety Systems Inc (USA) |
NSN 1680-01-154-8939 is a Wiring Harness,pylon, manufactured by Meggitt Safety Systems Inc, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
NSN 1680-01-154-8939 has 1 manufacturer part number on file: 6644 (Meggitt Safety Systems Inc).
3 possible matches (shared part number, not a government interchangeability claim): 5136-01-431-1892, 3439-01-596-2074, 4240-01-706-6219. Verify interchangeability with system specifications before substitution.
Key specifications for 6644: FSC Application Data: AIRCRAFT ACCESSORY EQUIPMENT; End Item Identification: C-141 AIRCRAFT. 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 1680-01-154-8939 has DEMIL Code B. 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.