The Valve,safety Relief, cataloged under National Stock Number 4820-01-313-2113, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Deere & Company Dba Deere John Co. Government technical data includes 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-313-2113 |
| Primary Part Number | AT70857 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Deere & Company Dba Deere John Co |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Adjustable Pressure Range | +2500.0 TO 2725.0 POUNDS PER SQUARE INCH LBS |
| Disk Loading Method | SPRING |
| Media for Which Designed | OIL, HYDRAULIC SINGLE RESPONSE |
| Material | STEEL BODY |
| 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 |
|---|---|
| AT70857 PRIMARY | Deere & Company Dba Deere John Co (USA) |
| Reference | Meaning |
|---|---|
| AT70857 | 5/9 Secondary reference Deere & Co |
| A70857 | 5/9 Secondary reference Deere & Co |
NSN 4820-01-313-2113 is a Valve,safety Relief, manufactured by Deere & Company Dba Deere John Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-313-2113 has 1 manufacturer part number on file: AT70857 (Deere & Company Dba Deere John Co).
Key specifications for AT70857: Flow Control Device: DISK; Adjustable Pressure Range: +2500.0 TO 2725.0 POUNDS PER SQUARE INCH LBS; Disk Loading Method: SPRING; Media for Which Designed: OIL, HYDRAULIC SINGLE RESPONSE. 5 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.