The Seat,valve, cataloged under National Stock Number 4810-00-488-8644, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4810-00-488-8644 |
| Item Name | Seat,valve |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Status | ACTIVE |
| Body Outside Diameter | 1.233 INCHES MINIMUM AND 1.237 INCHES MAXIMUM IN |
| Hardness Rating | 35.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM BODY |
| Body Stepped Inside Diameter | 0.623 INCHES MINIMUM THIRD STEP IN |
| Style Designator | PLAIN |
| Body Inside Diameter | 1.006 INCHES MINIMUM AND 1.009 INCHES MAXIMUM IN |
| Material | STEEL OVERALL |
| Seat Angle in Deg | 0.750 NOMINAL |
| Seating Surface Shape | ANGULAR |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| B24909 | 3/2 Design control — primary reference U.S. Government activity |
| 11303-5 | 5/2 Secondary reference U.S. Government activity |
NSN 4810-00-488-8644 is a Seat,valve, classified under FSC 4810, Valves, Powered. Status: active.
Key specifications for 4810-00-488-8644: Overall Height: 0.265 INCHES NOMINAL IN; Body Outside Diameter: 1.233 INCHES MINIMUM AND 1.237 INCHES MAXIMUM IN; Hardness Rating: 35.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM BODY; Body Stepped Inside Diameter: 0.623 INCHES MINIMUM THIRD STEP IN. 8 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.