The Cap,filler Opening, cataloged under National Stock Number 2590-00-172-1998, is classified within Federal Supply Class 2590 (Miscellaneous Vehicular Components) of the Vehicular Equipment Components group. The manufacturer of record is Protectoseal Co Container Div. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2590-00-172-1998 |
| Primary Part Number | EX1784CE38A |
| Item Name | Cap,filler Opening |
| FSC / FSG | 2590 / 25 — Miscellaneous Vehicular Components |
| Manufacturer | Protectoseal Co Container Div |
| Status | ACTIVE |
| Accommodation Type | LUGS END GRIPPING |
| Style Designator | NON-VENTED THREADED TYPE (INTERNAL) |
| Thread Diameter | 4.5000 INCHES NOMINAL IN |
| Features Provided | SEAL |
| System for Which Designed | NONPRESSURIZED |
| Thread Class | 2B |
| Material | ALUMINUM OVERALL |
| Thread Series Designator | UN |
| 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 |
|---|---|
| EX1784CE38A PRIMARY | Protectoseal Co Container Div (USA) |
| Reference | Meaning |
|---|---|
| 13120088 | 5/9 Secondary reference Caterpillar Paving Products Inc |
NSN 2590-00-172-1998 is a Cap,filler Opening, manufactured by Protectoseal Co Container Div, classified under FSC 2590, Miscellaneous Vehicular Components. Status: active.
NSN 2590-00-172-1998 has 1 manufacturer part number on file: EX1784CE38A (Protectoseal Co Container Div).
Key specifications for EX1784CE38A: Accommodation Type: LUGS END GRIPPING; Style Designator: NON-VENTED THREADED TYPE (INTERNAL); Thread Diameter: 4.5000 INCHES NOMINAL IN; Features Provided: SEAL. 8 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.