The Subplate Assembly, cataloged under National Stock Number 4820-01-062-5609, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace. Government technical data includes 1 specification, 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 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-062-5609 |
| Primary Part Number | 20453-400 |
| Item Name | Subplate Assembly |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace |
| Status | ACTIVE |
| General Characteristics Item Description | CONSISTS OF SUBPLATE HOUSING 1 P/N 20453-410;STUD 4 P/N 20453-1010;TRADEMARK 1 P/N 500B31;IDENT PLATE 1;NAMEPLATE 1;FERRULE 4 P/N 02-099013;FERRULE 2 P/N 02-099017L;DRIVE SCREW 6 P/N AN535-2-3;PLUG 1 P/N 02-000003;O-RING 8 P/N MS28775-013;O-RING 1 P/N MS28775-117;O-RING 4 P/N MS28775-128;O-RING 1 P/N MS28778-2;O-RING 1 P/N MS28778-4;O-RING 1 P/N MS28778024;BACK-UP 8 P/N MS28774-013;BACK-UP 2 P/N MS28774-117;BACK-UP 4 P/N MS28774-128;RELIEF VALVE 1 P/N 09-20314-10;SLEEVE 2 P/N 02-0002-03;SLEEVE 2 P/N 02-0002-05;MACHINE SCREW FILH 4 P/N MS35265-11;ALUMINUM ALLOY;CADMIUM PLATE PER QQ-P-416 |
| 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 |
|---|---|
| 20453-400 PRIMARY | Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (USA) |
NSN 4820-01-062-5609 is a Subplate Assembly, manufactured by Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-062-5609 has 1 manufacturer part number on file: 20453-400 (Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace).
2 possible matches (shared part number, not a government interchangeability claim): 4730-01-114-2001, 4820-01-156-4780. Verify interchangeability with system specifications before substitution.
Key specifications for 20453-400: General Characteristics Item Description: CONSISTS OF SUBPLATE HOUSING 1 P/N 20453-410;STUD 4 P/N 20453-1010;TRADEMARK 1 P/N 500B31;IDENT PLATE 1;NAMEPLATE 1;FERRULE 4 P/N 02-099013;FERRULE 2 P/N 02-099017L;DRIVE SCREW 6 P/N AN535-2-3;PLUG 1 P/N 02-000003;O-RING 8 P/N MS28775-013;O-RING 1 P/N MS28775-117;O-RING 4 P/N MS28775-128;O-RING 1 P/N MS28778-2;O-RING 1 P/N MS28778-4;O-RING 1 P/N MS28778024;BACK-UP 8 P/N MS28774-013;BACK-UP 2 P/N MS28774-117;BACK-UP 4 P/N MS28774-128;RELIEF VALVE 1 P/N 09-20314-10;SLEEVE 2 P/N 02-0002-03;SLEEVE 2 P/N 02-0002-05;MACHINE SCREW FILH 4 P/N MS35265-11;ALUMINUM ALLOY;CADMIUM PLATE PER QQ-P-416. 1 specification is 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.