The Valve,safety Relief, cataloged under National Stock Number 4820-00-853-6598, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Danfoss Fluid Power Inc Easley Opn. Government technical data includes 21 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-853-6598 |
| Primary Part Number | 1EXP954-006 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Danfoss Fluid Power Inc Easley Opn |
| Status | ACTIVE |
| Flow Control Device | PISTON |
| Connection Style | PLAIN,OPTIONAL END(PIPE) ALL ENDS |
| Connection Type | THREADED INTERNAL PIPE FIRST END |
| Connection Type | THREADED INTERNAL HOSE SECOND END |
| Connection Type | THREADED INTERNAL HOSE FOURTH END |
| Connection Type | THREADED INTERNAL HOSE THIRD END |
| Style Designator | ANGLE |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 0.750 INCHES FOURTH END IN |
| Nominal Thread Size | 0.625 INCHES THIRD END IN |
| Nominal Thread Size | 0.625 INCHES SECOND END IN |
| Nominal Thread Size | 1.000 INCHES FIRST END IN |
| Media for Which Designed | OIL, HYDRAULIC SINGLE RESPONSE |
| Thread Class | 2B SECOND END |
| Thread Class | 2B THIRD END |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNF FOURTH END |
| Thread Series Designator | UNF THIRD END |
| Thread Series Designator | NPT FIRST END |
| Thread Series Designator | UNF SECOND END |
| Valve Operation Method | AUTOMATIC |
| 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 |
|---|---|
| 1EXP954-006 PRIMARY | Danfoss Fluid Power Inc Easley Opn (USA) |
| 1EXP2364-002 PRIMARY | Danfoss Fluid Power Inc Easley Opn (USA) |
| Reference | Meaning |
|---|---|
| 24579-35 | 5/9 Secondary reference Pettibone Llc |
| A24579-4 | 5/9 Secondary reference Pettibone Llc |
NSN 4820-00-853-6598 is a Valve,safety Relief, manufactured by Danfoss Fluid Power Inc Easley Opn, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-853-6598 has 2 manufacturer part numbers on file: 1EXP954-006 (Danfoss Fluid Power Inc Easley Opn), 1EXP2364-002 (Danfoss Fluid Power Inc Easley Opn).
Key specifications for 1EXP954-006: Flow Control Device: PISTON; Connection Style: PLAIN,OPTIONAL END(PIPE) ALL ENDS; Connection Type: THREADED INTERNAL PIPE FIRST END; Connection Type: THREADED INTERNAL HOSE SECOND END. 21 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.