The Cap,filler Opening, cataloged under National Stock Number 2590-01-290-6738, is classified within Federal Supply Class 2590 (Miscellaneous Vehicular Components) of the Vehicular Equipment Components group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2590-01-290-6738 |
| Item Name | Cap,filler Opening |
| FSC / FSG | 2590 / 25 — Miscellaneous Vehicular Components |
| Status | ACTIVE |
| Thread Length | 1.125 INCHES NOMINAL IN |
| Style Designator | SNAP TYPE THREADED EXTERNAL |
| Filler Neck Diameter for Which Designed | 4.750 INCHES NOMINAL IN |
| Thread Diameter | 11.500 INCHES NOMINAL IN |
| Outside Diameter | 6.500 INCHES NOMINAL IN |
| System for Which Designed | PRESSURIZED |
| Pressure Relief Method | MANUAL |
| Material | ALUMINUM ALLOY OVERALL |
| Thread Series Designator | NPT |
| 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 |
|---|---|
| MF9384A | 5/2 Secondary reference U.S. Government activity |
| 518900-1 | 3/2 Design control — primary reference U.S. Government activity |
| 518900 | 7/1 Vendor item drawing reference U.S. Government activity |
NSN 2590-01-290-6738 is a Cap,filler Opening, classified under FSC 2590, Miscellaneous Vehicular Components. Status: active.
Key specifications for 2590-01-290-6738: Thread Length: 1.125 INCHES NOMINAL IN; Style Designator: SNAP TYPE THREADED EXTERNAL; Filler Neck Diameter for Which Designed: 4.750 INCHES NOMINAL IN; Thread Diameter: 11.500 INCHES NOMINAL IN. 9 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.