The Cap,filler Opening, cataloged under National Stock Number 2590-00-101-4904, is classified within Federal Supply Class 2590 (Miscellaneous Vehicular Components) of the Vehicular Equipment Components group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 2590-00-101-4904 |
| Item Name | Cap,filler Opening |
| FSC / FSG | 2590 / 25 — Miscellaneous Vehicular Components |
| Status | ACTIVE |
| Accommodation Type | NOTCHED END GRIPPING |
| Style Designator | CIRCULAR TYPE THREADED INTERNAL |
| Filler Neck Diameter for Which Designed | 1.938 INCHES NOMINAL IN |
| Thread Diameter | 1.9380 INCHES NOMINAL IN |
| Outside Diameter | 6.500 INCHES NOMINAL IN |
| Features Provided | BREATHER HOLE |
| System for Which Designed | NONPRESSURIZED |
| Thread Class | 2A A |
| Material | IRON OVERALL |
| Thread Series Designator | UN |
| Thread Quantity | 12.000 PER INCH |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 71-302025 | 5/9 Secondary reference U.S. Government activity |
| 71-3020250000 | 3/2 Design control — primary reference U.S. Government activity |
| 116229 | 5/9 Secondary reference U.S. Government activity |
NSN 2590-00-101-4904 is a Cap,filler Opening, classified under FSC 2590, Miscellaneous Vehicular Components. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4820-00-371-6009. Verify interchangeability with system specifications before substitution.
Key specifications for 2590-00-101-4904: Overall Height: 1.750 INCHES NOMINAL IN; Accommodation Type: NOTCHED END GRIPPING; Style Designator: CIRCULAR TYPE THREADED INTERNAL; Filler Neck Diameter for Which Designed: 1.938 INCHES NOMINAL IN. 11 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.