The Seat Assembly,valve, cataloged under National Stock Number 4820-00-183-4174, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Eaton Aerospace Llc Dba Sterer Engineering Div M.c.aerospace. Government technical data includes 1 specification, 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 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 | 4820-00-183-4174 |
| Primary Part Number | MC13459 |
| Item Name | Seat Assembly,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Eaton Aerospace Llc Dba Sterer Engineering Div M.c.aerospace |
| Status | ACTIVE |
| General Characteristics Item Description | CONSIST OF POPPET 1 AND SEAT 1 MATCHED FIT |
| 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 |
|---|---|
| MC13459 PRIMARY | Eaton Aerospace Llc Dba Sterer Engineering Div M.c.aerospace (USA) |
NSN 4820-00-183-4174 is a Seat Assembly,valve, manufactured by Eaton Aerospace Llc Dba Sterer Engineering Div M.c.aerospace, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-183-4174 has 1 manufacturer part number on file: MC13459 (Eaton Aerospace Llc Dba Sterer Engineering Div M.c.aerospace).
1 possible match (shared part number, not a government interchangeability claim): 5962-01-173-7471. Verify interchangeability with system specifications before substitution.
Key specifications for MC13459: General Characteristics Item Description: CONSIST OF POPPET 1 AND SEAT 1 MATCHED FIT; End Item Identification: 48200019968 AND 48200345877. 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.