The Doubler,heat Shield, cataloged under National Stock Number 1680-01-502-4654, 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. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1680-01-502-4654 |
| Primary Part Number | 74A340874-2017 |
| Item Name | Doubler,heat Shield |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| FSC Application Data | NEXT HIGHER ASSY IS CENTER, AFT, VERTICAL |
| Overall Diameter | 0.386 INCHES NOMINAL IN |
| Criticality Code Justification | AGAV |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 74A340874-2017 | Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems (USA) |
| 74A340874-2017 PRIMARY | The Boeing Company Div Defense (USA) |
NSN 1680-01-502-4654 is a Doubler,heat Shield, manufactured by The Boeing Company Div Defense, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
NSN 1680-01-502-4654 has 2 manufacturer part numbers on file: 74A340874-2017 (Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems), 74A340874-2017 (The Boeing Company Div Defense).
Key specifications for 74A340874-2017: Overall Height: 0.050 INCHES NOMINAL IN; FSC Application Data: NEXT HIGHER ASSY IS CENTER, AFT, VERTICAL; Overall Diameter: 0.386 INCHES NOMINAL IN; Criticality Code Justification: AGAV. 3 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 1680-01-502-4654 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.