The Seat,valve, cataloged under National Stock Number 4810-00-075-3881, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. The manufacturer of record is Parker-Hannifin Corporation Dba Pneutronics. Government technical data includes 7 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4810-00-075-3881 |
| Primary Part Number | 649740 |
| Item Name | Seat,valve |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Manufacturer | Parker-Hannifin Corporation Dba Pneutronics |
| Status | ACTIVE |
| Body Outside Diameter | 0.434 INCHES MINIMUM AND 0.436 INCHES MAXIMUM IN |
| Hardness Rating | 35.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL |
| Style Designator | PLAIN |
| Body Inside Diameter | 0.049 INCHES MINIMUM AND 0.051 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL CORROSION RESISTING OVERALL |
| Seating Surface Shape | FLAT |
| 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 |
|---|---|
| 649740 PRIMARY | Parker-Hannifin Corporation Dba Pneutronics (USA) |
| Reference | Meaning |
|---|---|
| 649740 | 5/1 Secondary reference Parker-Hannifin Corporation Dba Service and Support Operation Div Services and Support Operations |
| 649740 | 5/9 Secondary reference U.S. Government activity |
| 649740 | 5/9 Secondary reference U.S. Government activity |
NSN 4810-00-075-3881 is a Seat,valve, manufactured by Parker-Hannifin Corporation Dba Pneutronics, classified under FSC 4810, Valves, Powered. Status: active.
NSN 4810-00-075-3881 has 1 manufacturer part number on file: 649740 (Parker-Hannifin Corporation Dba Pneutronics).
Key specifications for 649740: Overall Height: 0.062 INCHES MINIMUM AND 0.064 INCHES MAXIMUM IN; Body Outside Diameter: 0.434 INCHES MINIMUM AND 0.436 INCHES MAXIMUM IN; Hardness Rating: 35.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL; Style Designator: PLAIN. 7 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.