The Valve,safety Relief, cataloged under National Stock Number 4820-01-335-7211, 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 8 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-335-7211 |
| Primary Part Number | AT163871 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Deere & Company Dba Deere John Co |
| Status | ACTIVE |
| Connection Style | GROOVED (DROP-IN CARTRIDGE) ALL ENDS |
| Connection Type | UNTHREADED CARTRIDGE ALL ENDS |
| Bonnet Type | INSIDE SPRING |
| Disk Loading Method | SPRING |
| Bonnet Attachment Method | INTEGRAL |
| Material | STEEL BODY |
| Opening Pressure Setting | 3480.0 POUNDS PER SQUARE INCH LBS |
| 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 |
|---|---|
| 5052-11030-002 | Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division (USA) |
| AT163871 PRIMARY | Deere & Company Dba Deere John Co (USA) |
| Reference | Meaning |
|---|---|
| 5052-11030-002 | 5/9 Secondary reference Parker Hannifin Corporation Dba Gresen Hydraulics Div Hydraulic Valve Division |
| AT114014 | 5/9 Secondary reference Deere & Co |
| AT114014 | 5/9 Secondary reference Deere & Company Dba Deere John Co |
NSN 4820-01-335-7211 is a Valve,safety Relief, manufactured by Deere & Company Dba Deere John Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-335-7211 has 2 manufacturer part numbers on file: 5052-11030-002 (Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division), AT163871 (Deere & Company Dba Deere John Co).
Key specifications for AT163871: Connection Style: GROOVED (DROP-IN CARTRIDGE) ALL ENDS; Connection Type: UNTHREADED CARTRIDGE ALL ENDS; Bonnet Type: INSIDE SPRING; Disk Loading Method: SPRING. 8 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.