The Seat,valve, cataloged under National Stock Number 4820-01-282-5100, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Tate Andale, Llc. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-282-5100 |
| Primary Part Number | M44-03-258C SH |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Tate Andale, Llc |
| Status | ACTIVE |
| Material | STEEL CORROSION RESISTING SEAT |
| 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 |
|---|---|
| 261-6100708 ITEM 5 | Naval Sea Systems Command (USA) |
| M44-03-258C SH PRIMARY | Tate Andale, Llc (USA) |
| Reference | Meaning |
|---|---|
| C3-250-55-01-03 ITEM 5 | 5/9 Secondary reference Huntington Ingalls Incorporated Div Ingalls Shipbuilding |
| M44-03-258C SH | C/1 Advisory reference — outside the item-of-supply concept Huntington Ingalls Incorporated Div Ingalls Shipbuilding |
| 261-6100708 | D/9 Drawing number reference only Naval Sea Systems Command |
| C3-250-55-01-03 | D/9 Drawing number reference only Huntington Ingalls Incorporated Div Ingalls Shipbuilding |
NSN 4820-01-282-5100 is a Seat,valve, manufactured by Tate Andale, Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-282-5100 has 2 manufacturer part numbers on file: 261-6100708 ITEM 5 (Naval Sea Systems Command), M44-03-258C SH (Tate Andale, Llc).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-282-9401, 4730-01-283-7192. Verify interchangeability with system specifications before substitution.
Key specifications for M44-03-258C SH: Material: STEEL CORROSION RESISTING SEAT. 1 specification is 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.