The Valve,bleeder,hydraulic System, cataloged under National Stock Number 4820-01-147-6456, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-147-6456 |
| Item Name | Valve,bleeder,hydraulic System |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| 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 |
| Reference | Meaning |
|---|---|
| C20113V001 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-01-147-6456 is a Valve,bleeder,hydraulic System, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-147-6456: Special Features: STEEL MIL-S-5626 OR AISI 4140 ZINC DICHROMATE,HEX BODY 0.750 IN.W ACROSS FLATS BY 0.875 IN.LG TAPPED 1/2-20 UNF-2B BY 0.500 IN.DP,SEAT 126.0 TO 130.0 DEG,THRU HOLE 0.125 IN.DIA,THD END 9/16-18 UNF-2A THD 0.375 IN.LG,HEX HEAD PLUG 1.250 IN.LG 1/2-20 UNF-2A THD 0.437 IN.LG,120.0 DEG POINT HEAT TREAT QUENCH AND TEMPER 50 TO 60 ROCKWELL C-SCALE A. 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.