The Valve,diaphragm,stop, cataloged under National Stock Number 4810-01-057-0616, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. The manufacturer of record is Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 13 specifications, 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4810-01-057-0616 |
| Primary Part Number | 639AS1384-1 |
| Item Name | Valve,diaphragm,stop |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| Connection Style | PLAIN,OPTIONAL END(PIPE) ALL ENDS |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Material Document and Classification | L-P-385,GRADE 2 MFR REF SINGLE MATERIAL RESPONSE SEAT |
| Operating Pressure | 5000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Operating Pressure | 50.0 POUNDS PER SQUARE INCH (PSI) NOMINAL POWER DRIVE LBS |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 0.250 INCHES ALL ENDS IN |
| Maximum Operating Temp | 180.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Material | STEEL CORROSION RESISTING BODY |
| Material | PLASTIC POLYCHLOROTRIFLUOROETHYLENE SEAT |
| Thread Series Designator | NPT ALL ENDS |
| Valve Operation Method | AIR |
| 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 |
|---|---|
| 639AS1384-1 PRIMARY | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 85053V-791 | 5/2 Secondary reference U.S. Government activity |
| 85-053KV | 5/1 Secondary reference U.S. Government activity |
| 639AS1384 | D/9 Drawing number reference only Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| 85053V | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 4810-01-057-0616 is a Valve,diaphragm,stop, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 4810, Valves, Powered. Status: active.
NSN 4810-01-057-0616 has 1 manufacturer part number on file: 639AS1384-1 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
1 possible match (shared part number, not a government interchangeability claim): 4810-01-057-3927. Verify interchangeability with system specifications before substitution.
Key specifications for 639AS1384-1: Connection Style: PLAIN,OPTIONAL END(PIPE) ALL ENDS; Connection Type: THREADED INTERNAL PIPE ALL ENDS; Style Designator: STRAIGHT THRU; Material Document and Classification: L-P-385,GRADE 2 MFR REF SINGLE MATERIAL RESPONSE SEAT. 13 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.