The Muffler,exhaust, cataloged under National Stock Number 2990-00-221-4433, is classified within Federal Supply Class 2990 (No Item Name Available) of the Engine Accessories group. The primary manufacturer of record is W.w. Grainger, Inc. Div Government Sales Division. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-00-221-4433 |
| Primary Part Number | Z-129C |
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 / 29 — No Item Name Available |
| Manufacturer | W.w. Grainger, Inc. Div Government Sales Division |
| Status | ACTIVE |
| Inlet Thread Series Designator | NPT SINGLE INLET |
| Material | STEEL LOCATION NOT OTHERWISE SPECIFIED |
| Inlet Projection Length | 0.812 INCHES NOMINAL SINGLE INLET IN |
| Operating Position | UNIVERSAL |
| Thread Direction | RIGHT-HAND SINGLE INLET |
| Coolant Type | AIR |
| Inlet Thread Size | 0.375-18 SINGLE INLET |
| Inlet Connection Type | THREADED SINGLE INLET |
| Muffler Design | STRAIGHT THROUGH |
| Nonconnection Outlet Type and Quantity | 1 ROUND HOLE |
| Body Shape | ROUND |
| Overall Diameter | 2.250 INCHES NOMINAL IN |
| Nonconnection Outlet Location | CENTER OF END SECTION |
| Inlet Thread Location | EXTERNAL SINGLE INLET |
| Design Type | DRY |
| Inlet Location | CENTER OF END SECTION |
| Nonconnection Outlet Size | 1.750 IN. DIA IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 2990-00-221-4433 is a Muffler,exhaust, manufactured by W.w. Grainger, Inc. Div Government Sales Division, classified under FSC 2990 (No Item Name Available). Status: active.
NSN 2990-00-221-4433 has 2 cross-referenced part numbers: Z-129C (W.w. Grainger, Inc. Div Government Sales Division), Z129C (Gardner Denver Inc.).
There is 1 known substitute for 2990-00-221-4433: 2990-00-269-7145. Verify interchangeability with system specifications before substitution.
Key specifications for Z-129C: Inlet Thread Series Designator: NPT SINGLE INLET; Overall Length: 2.000 INCHES NOMINAL IN; Material: STEEL LOCATION NOT OTHERWISE SPECIFIED; Inlet Projection Length: 0.812 INCHES NOMINAL SINGLE INLET IN. 19 total characteristics are documented in the Federal Logistics Information System.