The Bellows,metallic,packless Valve, cataloged under National Stock Number 4820-01-008-0573, 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 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-008-0573 |
| Primary Part Number | 757634-1 |
| Item Name | Bellows,metallic,packless Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Hamilton Sundstrand Corporation Dba Collins Aerospace |
| Status | ACTIVE |
| Overall Diameter | 1.040 INCHES MAXIMUM IN |
| Material | STEEL CORROSION RESISTING |
| Thread Size and Series/type Designator | 0.190-32 UNF |
| 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 |
|---|---|
| 757634-1 PRIMARY | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
| Reference | Meaning |
|---|---|
| 757634 | D/9 Drawing number reference only Hamilton Sundstrand Corporation Dba Collins Aerospace |
NSN 4820-01-008-0573 is a Bellows,metallic,packless Valve, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-008-0573 has 1 manufacturer part number on file: 757634-1 (Hamilton Sundstrand Corporation Dba Collins Aerospace).
Key specifications for 757634-1: Overall Diameter: 1.040 INCHES MAXIMUM IN; Overall Length: 2.330 INCHES MINIMUM AND 2.450 INCHES MAXIMUM IN; Part Name Assigned by Controlling Agency: CONTROL BELLOWS; End Item Identification: NSN 4820-00-605-2580. 3 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.