The Retainer,diaphragm, cataloged under National Stock Number 4820-01-008-0570, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Hamilton Sundstrand Corporation Dba Collins Aerospace. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-008-0570 |
| Primary Part Number | 757599-1 |
| Item Name | Retainer,diaphragm |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Hamilton Sundstrand Corporation Dba Collins Aerospace |
| Status | ACTIVE |
| General Characteristics Item Description | ALUMINUM ALLOY,AMS4027,3.500 IN. O/A LG,SPECIAL SHAPED IN |
| 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 |
|---|---|
| 757599-1 PRIMARY | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
| 757599-1 | The Durol Company (USA) |
| Reference | Meaning |
|---|---|
| 757599-1 | 5/2 Secondary reference U.S. Government activity |
| 757599-1 | 5/9 Secondary reference Dale Mfg and Tool Co Inc |
NSN 4820-01-008-0570 is a Retainer,diaphragm, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-008-0570 has 2 manufacturer part numbers on file: 757599-1 (Hamilton Sundstrand Corporation Dba Collins Aerospace), 757599-1 (The Durol Company).
Key specifications for 757599-1: General Characteristics Item Description: ALUMINUM ALLOY,AMS4027,3.500 IN. O/A LG,SPECIAL SHAPED IN; End Item Identification: 4820006058580. 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.