The Valve,safety Relief, cataloged under National Stock Number 4820-01-287-4853, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-287-4853 |
| Primary Part Number | 58280-3CP |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Flange Shape | RECTANGULAR WITH HOLES ALL ENDS |
| Flange Face Design | PLAIN ALL ENDS |
| Nominal Length | 3.457 INCHES ALL ENDS IN |
| Connection Type | FLANGE ALL ENDS |
| Style Designator | ANGLE |
| Bolt Hole Nominal Diameter | 0.534 INCHES ALL ENDS IN |
| Center to Center Nominal Distance Between Bolt Holes Along Width | 2.612 INCHES ALL ENDS IN |
| Bolt Hole Quantity | 4 ALL ENDS |
| Nominal Width | 3.457 INCHES ALL ENDS IN |
| Center to Center Nominal Distance Between Bolt Holes Along Length | 2.612 INCHES ALL ENDS IN |
| Material | COPPER ALLOY BODY |
| Opening Pressure Setting | 3820.0 POUNDS PER SQUARE INCH LBS |
| Valve Operation Method | AUTOMATIC |
| Nominal Thickness | 0.515 INCHES ALL ENDS IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 58280-3CP | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 58280-3CP | 3/2 Design control — primary reference U.S. Government activity |
| 58280-3 | 3/1 Design control — primary reference U.S. Government activity |
NSN 4820-01-287-4853 is a Valve,safety Relief, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-287-4853 has 1 manufacturer part number on file: 58280-3CP (Naval Inventory Control Point Mechanicsburg).
Key specifications for 58280-3CP: Flow Control Device: DISK; Flange Shape: RECTANGULAR WITH HOLES ALL ENDS; Flange Face Design: PLAIN ALL ENDS; Nominal Length: 3.457 INCHES ALL ENDS IN. 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.
NSN 4820-01-287-4853 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.