The Parts Kit,safety Relief Valve, cataloged under National Stock Number 4820-01-210-3543, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Sun Hydraulics Corporation. Government technical data includes 4 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 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-210-3543 |
| Primary Part Number | 990-003-006 |
| Item Name | Parts Kit,safety Relief Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Sun Hydraulics Corporation |
| Status | ACTIVE |
| Component Quantity | 4 |
| End Item Source | 54035 |
| Supply Items and Quantities | PACKING,PREFORMED 2,BACK-UP RINGS 2 |
| End Item Name | VALVE |
| 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 |
|---|---|
| 990 003 006 | Sun Hydraulics Ltd (GBR) |
| 990-003-006 PRIMARY | Sun Hydraulics Corporation (USA) |
NSN 4820-01-210-3543 is a Parts Kit,safety Relief Valve, manufactured by Sun Hydraulics Corporation, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-210-3543 has 2 manufacturer part numbers on file: 990 003 006 (Sun Hydraulics Ltd), 990-003-006 (Sun Hydraulics Corporation).
2 possible matches (shared part number, not a government interchangeability claim): 5330-01-278-1648, 5330-01-425-8545. Verify interchangeability with system specifications before substitution.
Key specifications for 990-003-006: Component Quantity: 4; End Item Source: 54035; Supply Items and Quantities: PACKING,PREFORMED 2,BACK-UP RINGS 2; End Item Name: VALVE. 4 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.