The Connector,exhaust Pipe, cataloged under National Stock Number 2990-01-471-3542, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is The Boeing Company. Government technical data includes 10 specifications, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-01-471-3542 |
| Primary Part Number | 7-511711102-1 |
| Item Name | Connector,exhaust Pipe |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Pipe/tube Second End Nominal Inside Diameter | 2.850 INCHES IN |
| Design Form | STRAIGHT |
| Nominal Overall Length | 3.110 INCHES IN |
| Wall Thickness | 0.260 INCHES NOMINAL IN |
| Pipe/tube First End Nominal Outside Diameter | 2.005 INCHES IN |
| Pipe/tube Second End Nominal Outside Diameter | 3.580 INCHES IN |
| First End Connection Type | UNTHREADED EXTERNAL PIPE/TUBE |
| Material | STEEL |
| Second End Connection Type | UNTHREADED EXTERNAL PIPE/TUBE |
| Pipe/tube First End Nominal Inside Diameter | 1.564 INCHES 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 |
|---|---|
| 7-511711102-1 PRIMARY | The Boeing Company (USA) |
| Reference | Meaning |
|---|---|
| 7-511711102 | 5/9 Secondary reference Program Manager Advanced Attack Helicopter Barcom Amcpm-Aah |
| 7-511711102 | D/9 Drawing number reference only The Boeing Company |
NSN 2990-01-471-3542 is a Connector,exhaust Pipe, manufactured by The Boeing Company, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-471-3542 has 1 manufacturer part number on file: 7-511711102-1 (The Boeing Company).
Key specifications for 7-511711102-1: Pipe/tube Second End Nominal Inside Diameter: 2.850 INCHES IN; Design Form: STRAIGHT; Nominal Overall Length: 3.110 INCHES IN; Wall Thickness: 0.260 INCHES NOMINAL IN. 10 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.
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.