The Disk,valve, cataloged under National Stock Number 4810-01-178-8925, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. The manufacturer of record is Derbyshire Machine & Tool Co. Government technical data includes 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4810-01-178-8925 |
| Primary Part Number | 508-4325844PC10 |
| Item Name | Disk,valve |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Manufacturer | Derbyshire Machine & Tool Co |
| Status | ACTIVE |
| Outside Diameter | 3.188 INCHES NOMINAL IN |
| Nominal Thread Size | 2.000 INCHES IN |
| Thread Class | 3B |
| Material | NICKEL ALLOY |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| 2280-400 | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| 508-4325844PC10 PRIMARY | Derbyshire Machine & Tool Co (USA) |
| Reference | Meaning |
|---|---|
| 508-4325844 | D/9 Drawing number reference only U.S. Government activity |
| 508-4325844 PC 10 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4810-01-178-8925 is a Disk,valve, manufactured by Derbyshire Machine & Tool Co, classified under FSC 4810, Valves, Powered. Status: active.
NSN 4810-01-178-8925 has 2 manufacturer part numbers on file: 2280-400 (Huntington Ingalls Inc Div Newport News Shipbuilding), 508-4325844PC10 (Derbyshire Machine & Tool Co).
3 possible matches (shared part number, not a government interchangeability claim): 4810-01-188-3596, 4810-01-189-3413, 4810-01-189-3414. Verify interchangeability with system specifications before substitution.
Key specifications for 508-4325844PC10: Overall Height: 2.188 INCHES NOMINAL IN; Outside Diameter: 3.188 INCHES NOMINAL IN; Nominal Thread Size: 2.000 INCHES IN; Thread Class: 3B. 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.