The Cap,filler Opening, cataloged under National Stock Number 2590-00-920-8235, is classified within Federal Supply Class 2590 (Miscellaneous Vehicular Components) of the Vehicular Equipment Components group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 15 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2590-00-920-8235 |
| Primary Part Number | 1H9588 |
| Item Name | Cap,filler Opening |
| FSC / FSG | 2590 / 25 — Miscellaneous Vehicular Components |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Accommodation Type | HEXAGON END GRIPPING |
| Thread Length | 0.312 INCHES NOMINAL IN |
| Style Designator | THREADED TYPE-INTERNAL |
| Filler Neck Diameter for Which Designed | 1.438 INCHES NOMINAL IN |
| Thread Pitch Diameters | +1.4459 TO 1.4542 INCHES IN |
| Thread Diameter | 1.438 INCHES NOMINAL IN |
| Material Document and Classification | SAE 41 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.783 INCHES NOMINAL IN |
| System for Which Designed | PRESSURIZED |
| Pressure Relief Method | AUTOMATIC |
| Thread Class | 2A A |
| Maximum Working Pressure | 45.000 POUNDS PER SQUARE INCH (PSI) LBS |
| Material | COPPER ALLOY OVERALL |
| Thread Series Designator | NPT |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 1H9588 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
NSN 2590-00-920-8235 is a Cap,filler Opening, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 2590, Miscellaneous Vehicular Components. Status: active.
NSN 2590-00-920-8235 has 1 manufacturer part number on file: 1H9588 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 1H9588: Overall Height: 1.300 INCHES NOMINAL IN; Accommodation Type: HEXAGON END GRIPPING; Thread Length: 0.312 INCHES NOMINAL IN; Style Designator: THREADED TYPE-INTERNAL. 15 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.