The Piston,valve, cataloged under National Stock Number 4820-00-231-0050, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is David Brown Hydraulics Inc Dba Hydreco. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-00-231-0050 |
| Primary Part Number | 513X118 |
| Item Name | Piston,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | David Brown Hydraulics Inc Dba Hydreco |
| Status | ACTIVE |
| 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 |
|---|---|
| 513X118 PRIMARY | David Brown Hydraulics Inc Dba Hydreco (USA) |
| Reference | Meaning |
|---|---|
| U46323 | 5/9 Secondary reference Deere & Company Dba Deere John Co |
| U46323 | 5/9 Secondary reference Deere & Co |
NSN 4820-00-231-0050 is a Piston,valve, manufactured by David Brown Hydraulics Inc Dba Hydreco, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-231-0050 has 1 manufacturer part number on file: 513X118 (David Brown Hydraulics Inc Dba Hydreco).
Key specifications for 513X118: Special Features: MATERIAL STEEL,FED STD NO. 66 AISI OR SAE C1115,C1117 OR B1113,HARDEN TO ROCKWELL A78.5 MIN.,1.923 IN.LONG OVERALL,0.9989 MIN 0.9994 IN. DIA,ONE END DRILLED 0.625 IN. DIA,1/2 IN. DEEP,THREE GROOVES SPACED 1/8 IN. APART,020 IN. DEEP,CARBURIZED TO BE 0.020-0.040 IN. DEEP AFTER FINAL MACHINING,SMALLEND DIA 0.880-0.885 IN. DIA BY 1.048 IN.LONG IN. 0 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.