The Subplate Assembly,valve, cataloged under National Stock Number 4820-01-121-0518, 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-121-0518 |
| Primary Part Number | 20394-400 |
| Item Name | Subplate Assembly,valve |
| 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 | ASSEMBLY CONSISTS OF 1 EA P/N 20394-410 HOUSING MATERIAL ALUMINUM,QQ-A-225/8,6061-T651,5 EA FERRULES P/N 02-099014 MATERIAL ALUMINUM,QQ-A-225/8,6061-T651,4 EA SLEEVES P/N 02-0002-04 MATERIAL ALUMINUM QQ-A-225/8,6061-T651,1 EA P/N 02-0002-03 SLEEVE,MATERIAL ALUMINUM,QQ-A-225/8,6061-T651,1 EA TRADEMARK P/N 500B31 MATERIAL ALUMINUM QQ-A-250/2,3003-0,1 EA NAMEPLATE MATERIAL CRES MIL-S-5059,302,6 EA DRIVE SCREWS ROUND HEAD P/N AN535-2-3,10 EA P/N MS28775-117 O-RINGS MATERIAL RUBBER,MIL-P-25732,BUNA-N,10 EA P/N MS28774-117 BACK-UP MATERIAL PLASTIC,MIL-R-8791,POLYTETRAFLUOROETHYLENE;ALL ALUMINUM PARTS ANODIZED MIL-A-8625,TYPE 1,CLASS 1 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 20394-400 PRIMARY | Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (USA) |
NSN 4820-01-121-0518 is a Subplate Assembly,valve, manufactured by Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-121-0518 has 1 manufacturer part number on file: 20394-400 (Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace).
Key specifications for 20394-400: General Characteristics Item Description: ASSEMBLY CONSISTS OF 1 EA P/N 20394-410 HOUSING MATERIAL ALUMINUM,QQ-A-225/8,6061-T651,5 EA FERRULES P/N 02-099014 MATERIAL ALUMINUM,QQ-A-225/8,6061-T651,4 EA SLEEVES P/N 02-0002-04 MATERIAL ALUMINUM QQ-A-225/8,6061-T651,1 EA P/N 02-0002-03 SLEEVE,MATERIAL ALUMINUM,QQ-A-225/8,6061-T651,1 EA TRADEMARK P/N 500B31 MATERIAL ALUMINUM QQ-A-250/2,3003-0,1 EA NAMEPLATE MATERIAL CRES MIL-S-5059,302,6 EA DRIVE SCREWS ROUND HEAD P/N AN535-2-3,10 EA P/N MS28775-117 O-RINGS MATERIAL RUBBER,MIL-P-25732,BUNA-N,10 EA P/N MS28774-117 BACK-UP MATERIAL PLASTIC,MIL-R-8791,POLYTETRAFLUOROETHYLENE;ALL ALUMINUM PARTS ANODIZED MIL-A-8625,TYPE 1,CLASS 1; End Item Identification: SARGENT SUBPLATE ASSY MODEL 20394-400. 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.
NSN 4820-01-121-0518 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.