The Pipe,exhaust, cataloged under National Stock Number 2990-00-405-4319, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Komatsu America Corporation. Government technical data includes 5 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 2990-00-405-4319 |
| Primary Part Number | 620162C1 |
| Item Name | Pipe,exhaust |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Komatsu America Corporation |
| Status | ACTIVE |
| Nominal Overall Length | 40.250 INCHES IN |
| Wall Thickness | 0.0620 INCHES NOMINAL IN |
| Nominal Outside Diameter | 3.625 INCHES IN |
| Surface Treatment | CHROMIUM |
| Material | STEEL |
| 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 |
|---|---|
| 620162C1 PRIMARY | Komatsu America Corporation (USA) |
| Reference | Meaning |
|---|---|
| D98480 | 5/9 Secondary reference Komatsu America Corporation |
| 98480 | 5/9 Secondary reference Komatsu America Corporation |
| D96098 | 5/9 Secondary reference Komatsu America Corporation |
NSN 2990-00-405-4319 is a Pipe,exhaust, manufactured by Komatsu America Corporation, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-00-405-4319 has 1 manufacturer part number on file: 620162C1 (Komatsu America Corporation).
4 possible matches (shared part number, not a government interchangeability claim): 2990-00-414-6395, 5340-00-596-5569, 3040-01-687-9360. Verify interchangeability with system specifications before substitution.
Key specifications for 620162C1: Nominal Overall Length: 40.250 INCHES IN; Wall Thickness: 0.0620 INCHES NOMINAL IN; Nominal Outside Diameter: 3.625 INCHES IN; Surface Treatment: CHROMIUM. 5 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.