The Breather, cataloged under National Stock Number 2520-00-560-4871, is classified within Federal Supply Class 2520 (Vehicular Power Transmission Components) of the Vehicular Equipment Components group. The manufacturer of record is Itt Marlow a Unit of Itt Pumps and Compressors Div. Government technical data includes 4 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 2520-00-560-4871 |
| Primary Part Number | 24454 |
| Item Name | Breather |
| FSC / FSG | 2520 / 25 — Vehicular Power Transmission Components |
| Manufacturer | Itt Marlow a Unit of Itt Pumps and Compressors Div |
| Status | ACTIVE |
| Outside Diameter | 0.562 INCHES MAXIMUM IN |
| Connection Type | THREADED |
| Body Material | STEEL |
| Thread Size and Series/type Designator | 1/8-27 NPT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 24454 PRIMARY | Itt Marlow a Unit of Itt Pumps and Compressors Div (USA) |
| Reference | Meaning |
|---|---|
| B43826 | 5/9 Secondary reference Davey Compressor Co Div of Keco Industries Inc |
| B43826 | 5/9 Secondary reference Drs Environmental Systems Inc |
| B43826 | 5/2 Secondary reference U.S. Government activity |
| B5-45-2773 | 3/2 Design control — primary reference U.S. Government activity |
NSN 2520-00-560-4871 is a Breather, manufactured by Itt Marlow a Unit of Itt Pumps and Compressors Div, classified under FSC 2520, Vehicular Power Transmission Components. Status: active.
NSN 2520-00-560-4871 has 1 manufacturer part number on file: 24454 (Itt Marlow a Unit of Itt Pumps and Compressors Div).
3 possible matches (shared part number, not a government interchangeability claim): 6645-01-141-4425, 5310-01-408-5349, 3040-01-423-6645. Verify interchangeability with system specifications before substitution.
Key specifications for 24454: Overall Height: 0.830 INCHES MAXIMUM IN; Outside Diameter: 0.562 INCHES MAXIMUM IN; Connection Type: THREADED; Body Material: STEEL. 4 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.