The Pipe,exhaust, cataloged under National Stock Number 2990-01-099-3781, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Wheeler Fleet Solutions, Co.. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Pipe,exhaust |
| FSC / FSG | 2990 — Miscellaneous Engine Accessories, Nonaircraft (FSG 29) |
| Manufacturers | Wheeler Fleet Solutions, Co. (CAGE 55683); Echelon Supply and Service, Inc. (CAGE 61125) |
| Parameter | Value |
|---|---|
| NSN | 2990-01-099-3781 |
| Primary Part Number | 685-69954 |
| Item Name | Pipe,exhaust |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Wheeler Fleet Solutions, Co. |
| Status | ACTIVE |
| 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 |
|---|---|
| 685-69954 PRIMARY | Wheeler Fleet Solutions, Co. (USA) |
| A1W-81576 PRIMARY | Echelon Supply and Service, Inc. (USA) |
| Reference | Meaning |
|---|---|
| T871308 | 5/9 Secondary reference Riker Products |
| 69954 | C/1 Advisory reference — outside the item-of-supply concept Drs Environmental Systems Inc |
| 69954 | 5/9 Secondary reference Davey Compressor Co Div of Keco Industries Inc |
| 81576 | 5/9 Secondary reference Davey Compressor Co Div of Keco Industries Inc |
| 81576 | C/1 Advisory reference — outside the item-of-supply concept Drs Environmental Systems Inc |
NSN 2990-01-099-3781 is a Pipe,exhaust, manufactured by Wheeler Fleet Solutions, Co., classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-099-3781 has 2 manufacturer part numbers on file: 685-69954 (Wheeler Fleet Solutions, Co.), A1W-81576 (Echelon Supply and Service, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5325-01-432-3103. Verify interchangeability with system specifications before substitution.
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.