The Seat,valve, cataloged under National Stock Number 4810-00-905-6526, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. The manufacturer of record is L3 Technologies, Inc. Div Ocean Systems. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4810-00-905-6526 |
| Primary Part Number | 3144327 |
| Item Name | Seat,valve |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Manufacturer | L3 Technologies, Inc. Div Ocean Systems |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 0.063 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN |
| Flange Diameter | 0.265 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN |
| FSC Application Data | CONTROL ASSEMBLY,SONAR SET |
| Body Outside Diameter | 0.153 INCHES MINIMUM AND 0.154 INCHES MAXIMUM IN |
| Hardness Rating | 61.0 ROCKWELL C MINIMUM AND 65.0 ROCKWELL C MAXIMUM OVERALL |
| Style Designator | PLAIN FLANGED |
| Body Inside Diameter | 0.080 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN |
| Under Flange Height | 0.168 INCHES MINIMUM AND 0.170 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 | N |
| Part Number | Manufacturer |
|---|---|
| 3144327 PRIMARY | L3 Technologies, Inc. Div Ocean Systems (USA) |
| Reference | Meaning |
|---|---|
| 3144327 | 5/9 Secondary reference Allied-Signal Inc Dba Allied-Signal Aerospace Co Electrodynamics Div |
NSN 4810-00-905-6526 is a Seat,valve, manufactured by L3 Technologies, Inc. Div Ocean Systems, classified under FSC 4810, Valves, Powered. Status: active.
NSN 4810-00-905-6526 has 1 manufacturer part number on file: 3144327 (L3 Technologies, Inc. Div Ocean Systems).
1 possible match (shared part number, not a government interchangeability claim): 5961-01-069-8650. Verify interchangeability with system specifications before substitution.
Key specifications for 3144327: Flange Seat to Disk End Height: 0.063 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN; Flange Diameter: 0.265 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN; FSC Application Data: CONTROL ASSEMBLY,SONAR SET; Body Outside Diameter: 0.153 INCHES MINIMUM AND 0.154 INCHES MAXIMUM IN. 10 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.