The Seat,valve, cataloged under National Stock Number 4810-00-835-0271, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. The manufacturer of record is Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road). Government technical data includes 9 specifications, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4810-00-835-0271 |
| Primary Part Number | 858844-1 |
| Item Name | Seat,valve |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Manufacturer | Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 0.040 INCHES MINIMUM AND 0.045 INCHES MAXIMUM IN |
| Flange Diameter | 0.490 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| FSC Application Data | VALVE,REGULATING,FLUID PRESSURE,POWERED |
| Body Outside Diameter | 0.270 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN |
| Style Designator | PLAIN FLANGED |
| Body Inside Diameter | 0.176 INCHES MINIMUM AND 0.178 INCHES MAXIMUM IN |
| Under Flange Height | 0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN |
| Material | STEEL 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 |
|---|---|
| 858844-1 | Boeing Distribution Services X, Inc. (USA) |
| 858844-1 PRIMARY | Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) (USA) |
| Reference | Meaning |
|---|---|
| 858844-1 | 5/9 Secondary reference U.S. Government activity |
NSN 4810-00-835-0271 is a Seat,valve, manufactured by Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road), classified under FSC 4810, Valves, Powered. Status: active.
NSN 4810-00-835-0271 has 2 manufacturer part numbers on file: 858844-1 (Boeing Distribution Services X, Inc.), 858844-1 (Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road)).
Key specifications for 858844-1: Flange Seat to Disk End Height: 0.040 INCHES MINIMUM AND 0.045 INCHES MAXIMUM IN; Flange Diameter: 0.490 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN; FSC Application Data: VALVE,REGULATING,FLUID PRESSURE,POWERED; Body Outside Diameter: 0.270 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN. 9 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.