The Seat,valve, cataloged under National Stock Number 4810-00-218-4013, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. The manufacturer of record is Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings). Government technical data includes 17 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through both NSN and commercial part number lookups. 10 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4810-00-218-4013 |
| Primary Part Number | CS4310-0005 |
| Item Name | Seat,valve |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Manufacturer | Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) |
| Status | ACTIVE |
| FSC Application Data | VALVE,AIRCOMPRESSOR |
| Thread Length | 0.188 INCHES NOMINAL SECOND THREADED PORTION IN |
| Thread Length | 0.250 INCHES NOMINAL FIRST THREADED PORTION IN |
| Hardness Rating | 325.0 BRINELL STANDARD MINIMUM AND 350.0 BRINELL STANDARD MAXIMUM OVERALL |
| Style Designator | DOUBLE FLANGED |
| Body Inside Diameter | 0.531 INCHES NOMINAL IN |
| Nominal Thread Size | 0.750 INCHES FIRST THREADED PORTION IN |
| Nominal Thread Size | 1.000 INCHES SECOND THREADED PORTION IN |
| Seat Radius | 0.080 INCHES NOMINAL IN |
| Thread Class | 3A FIRST THREADED PORTION A |
| Thread Class | 3A SECOND THREADED PORTION A |
| Thread Quantity Per Inch | 24 FIRST THREADED PORTION |
| Thread Quantity Per Inch | 24 SECOND THREADED PORTION |
| Material | STEEL OVERALL |
| Thread Series Designator | UNS FIRST THREADED PORTION |
| Thread Series Designator | UNS SECOND THREADED PORTION |
| Seating Surface Shape | RADIAL |
| 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 |
|---|---|
| CS4310-0005 | Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) (USA) |
| Reference | Meaning |
|---|---|
| 157440PC185 | 5/9 Secondary reference U.S. Government activity |
| 3112B | 5/9 Secondary reference U.S. Government activity |
| 157017PC185 | 5/9 Secondary reference U.S. Government activity |
| 157016PC185 | 5/9 Secondary reference U.S. Government activity |
| 3112B | C/1 Advisory reference — outside the item-of-supply concept Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions |
| 157441PC185 | 5/9 Secondary reference U.S. Government activity |
| 156413PC185 | 5/9 Secondary reference U.S. Government activity |
| 3112B | 3/9 Design control — primary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 157437PC185 | 5/9 Secondary reference U.S. Government activity |
| 157013PC185 | 5/9 Secondary reference U.S. Government activity |
NSN 4810-00-218-4013 is a Seat,valve, manufactured by Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings), classified under FSC 4810, Valves, Powered. Status: active.
NSN 4810-00-218-4013 has 1 manufacturer part number on file: CS4310-0005 (Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)).
Key specifications for CS4310-0005: Overall Height: 0.490 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN; FSC Application Data: VALVE,AIRCOMPRESSOR; Thread Length: 0.188 INCHES NOMINAL SECOND THREADED PORTION IN; Thread Length: 0.250 INCHES NOMINAL FIRST THREADED PORTION IN. 17 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.