The Diaphragm,valve,flat, cataloged under National Stock Number 4810-01-666-9129, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. The manufacturer of record is Hamilton Sundstrand Corporation Dba Collins Aerospace. Government technical data includes 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4810-01-666-9129 |
| Primary Part Number | 728812-3 |
| Item Name | Diaphragm,valve,flat |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Manufacturer | Hamilton Sundstrand Corporation Dba Collins Aerospace |
| Status | ACTIVE |
| Outside Diameter | 2.730 INCHES NOMINAL IN |
| Style Designator | SPECIAL SHAPED |
| Material Thickness | 0.025 INCHES NOMINAL IN |
| Center Hole Diameter | 0.644 INCHES NOMINAL IN |
| Material | RUBBER SILICONE |
| 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 |
|---|---|
| 728812-3 PRIMARY | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
| Reference | Meaning |
|---|---|
| 728812 | D/9 Drawing number reference only Hamilton Sundstrand Corporation Dba Collins Aerospace |
NSN 4810-01-666-9129 is a Diaphragm,valve,flat, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 4810, Valves, Powered. Status: active.
NSN 4810-01-666-9129 has 1 manufacturer part number on file: 728812-3 (Hamilton Sundstrand Corporation Dba Collins Aerospace).
Key specifications for 728812-3: Overall Height: 1.300 INCHES NOMINAL IN; Outside Diameter: 2.730 INCHES NOMINAL IN; Style Designator: SPECIAL SHAPED; Material Thickness: 0.025 INCHES NOMINAL IN. 5 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.