The Muffler,exhaust, cataloged under National Stock Number 2990-01-038-9191, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Harco Manufacturing Company Div Harco Manufacturing Company Inc. Government technical data includes 19 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 2990-01-038-9191 |
| Primary Part Number | SASR817-5-HH |
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Harco Manufacturing Company Div Harco Manufacturing Company Inc |
| Status | ACTIVE |
| Inlet Flange Shape | ROUND SINGLE INLET |
| Operating Position | HORIZONTAL |
| Inlet Location | EXTREME RIGHT SECTION OF BODY |
| Coolant Type | AIR |
| Design Type | DRY |
| Overall Diameter | 17.000 INCHES NOMINAL IN |
| Center to Center Distance Between Mounting Holes | FOUR HOLES EQUALLY SPACED ON 8.500 DIA BOLT CIRCLE SINGLE INLET |
| Inlet Projection Length | 6.250 INCHES NOMINAL SINGLE INLET IN |
| Inlet Flange Mounting Hole Diameter | 0.500 INCHES NOMINAL SINGLE INLET IN |
| Muffler Design | DIRECTIONAL VANE W/INTEGRAL SPARK ARRESTOR |
| Outlet Outside Diameter | 5.000 INCHES NOMINAL FIRST OUTLET IN |
| Inlet Connection Type | FLANGE SINGLE INLET |
| Body Shape | ROUND |
| Inlet Flange Mounting Provision and Quantity | 4 HOLES SINGLE INLET |
| Unable to Decode | UNABLE TO DECODE |
| Material | STEEL CORROSION RESISTING LOCATION NOT OTHERWISE SPECIFIED |
| Outlet Projection Length | 5.625 INCHES NOMINAL FIRST OUTLET IN |
| Outlet Connection Type | UNTHREADED FIRST OUTLET |
| Outlet Location | EXTREME LEFT SECTION OF BODY |
| 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 |
|---|---|
| SASR817-5-HH PRIMARY | Harco Manufacturing Company Div Harco Manufacturing Company Inc (USA) |
| Reference | Meaning |
|---|---|
| 55500 | 7/9 Vendor item drawing reference U.S. Government activity |
NSN 2990-01-038-9191 is a Muffler,exhaust, manufactured by Harco Manufacturing Company Div Harco Manufacturing Company Inc, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-038-9191 has 1 manufacturer part number on file: SASR817-5-HH (Harco Manufacturing Company Div Harco Manufacturing Company Inc).
3 possible matches (shared part number, not a government interchangeability claim): 2510-01-166-8915, 5330-01-173-6439, 5935-01-606-0567. Verify interchangeability with system specifications before substitution.
Key specifications for SASR817-5-HH: Inlet Flange Shape: ROUND SINGLE INLET; Operating Position: HORIZONTAL; Inlet Location: EXTREME RIGHT SECTION OF BODY; Coolant Type: AIR. 19 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.