The Pipe,exhaust, cataloged under National Stock Number 2990-01-003-7511, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Walker Mfg Co. Government technical data includes 7 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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 | 2990-01-003-7511 |
| Primary Part Number | 40462 |
| Item Name | Pipe,exhaust |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Walker Mfg Co |
| Status | ACTIVE |
| Design Form | WELDMENT |
| Enlarged End Inside Diameter | 2.507 INCHES NOMINAL IN |
| Wall Thickness | 0.0750 INCHES NOMINAL IN |
| Enlarged End Length | 2.000 INCHES NOMINAL IN |
| Nominal Outside Diameter | 2.580 INCHES IN |
| Material | STEEL |
| Usage Location | EXHAUST PIPE |
| 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 |
|---|---|
| 40462 | Walker Mfg Co (USA) |
| Reference | Meaning |
|---|---|
| 94951 | 5/9 Secondary reference U.S. Government activity |
| 4Y2096 | 5/9 Secondary reference U.S. Government activity |
| 94951 | 5/9 Secondary reference Goerlichs |
| 3828907 | 3/2 Design control — primary reference U.S. Government activity |
| 448664 | 5/2 Secondary reference U.S. Government activity |
NSN 2990-01-003-7511 is a Pipe,exhaust, manufactured by Walker Mfg Co, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-003-7511 has 1 manufacturer part number on file: 40462 (Walker Mfg Co).
5 possible matches (shared part number, not a government interchangeability claim): 5962-01-079-0180, 3040-01-161-5363, 6625-01-225-6674. Verify interchangeability with system specifications before substitution.
Key specifications for 40462: Design Form: WELDMENT; Enlarged End Inside Diameter: 2.507 INCHES NOMINAL IN; Wall Thickness: 0.0750 INCHES NOMINAL IN; Enlarged End Length: 2.000 INCHES NOMINAL IN. 7 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.