The Cap Assembly,protective,muffler-, cataloged under National Stock Number 2990-01-252-6456, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Donaldson Company, Inc.. The record lists 4 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-01-252-6456 |
| Primary Part Number | P27-0538 |
| Item Name | Cap Assembly,protective,muffler- |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Donaldson Company, Inc. |
| 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 |
|---|---|
| P27-0538 PRIMARY | Donaldson Company, Inc. (USA) |
| 40-0000303 | Brinkley Technology Group Llc Dba Hercules Manufacturing (USA) |
| PPP270538D89-93 | Donaldson France (FRA) |
| PPP270538 | Donaldson France (FRA) |
| Reference | Meaning |
|---|---|
| 40-0000303 | 5/9 Secondary reference Hercules Engine Co Inc |
NSN 2990-01-252-6456 is a Cap Assembly,protective,muffler-, manufactured by Donaldson Company, Inc., classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-252-6456 has 4 manufacturer part numbers on file: P27-0538 (Donaldson Company, Inc.), 40-0000303 (Brinkley Technology Group Llc Dba Hercules Manufacturing), PPP270538D89-93 (Donaldson France), PPP270538 (Donaldson France).
1 possible match (shared part number, not a government interchangeability claim): 5895-01-727-8513. Verify interchangeability with system specifications before substitution.
Key specifications for P27-0538: Special Features: UTILIZED ON TACTICAL WATER DISTRIBUTION. 0 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.