Acquisition method (AMC)
3
FSC 4820 × SEAT,VALVE
SEAT,VALVE
4820-01-055-4056 FSC 4820
NSN 4820-01-055-4056 (also written 4820010554056; NIIN 01-055-4056) is a seat, valve in Federal Supply Class 4820, Valves, Nonpowered. 1 manufacturer part number from 1 supplier is on record. It was last purchased in Oct 2026.
Open for bid
No open solicitations on record for this NSN right now.
Can you win it?
This item is coded to be bought directly from the actual manufacturer (AMC 3).
Suffix (AMSC)
C
Competition
Coded for a named source
AMC 3: buy directly from the actual manufacturer, second or later time. AMSC C: needs engineering source approval; other sources must qualify first. The codes describe the item's status on record, not any one solicitation. What the codes mean
What it is — can you make it?
Dimensions, the FLIS specification requirements, and the manufacturer part numbers already qualified against this NSN.
Specifications
From the federal catalog (DLA FLIS / PUB LOG) — what your part has to meet. Cited specification documents can be looked up in ASSIST Quick Search ↗, DoD's public spec repository — copy the document number in.
| Requirement | Value |
|---|---|
| BODY OUTSIDE DIAMETER ADAR | INCHES MINIMUM 0.618 AND INCHES MAXIMUM 0.623 |
| BODY INSIDE DIAMETER ADAS | INCHES NOMINAL 0.316 |
| FLANGE SEAT TO DISK END HEIGHT AJRF | INCHES MINIMUM 0.050 AND INCHES MAXIMUM 0.060 |
| UNDER FLANGE HEIGHT AJRM | INCHES MINIMUM 0.900 AND INCHES MAXIMUM 0.910 |
| SEATING SURFACE SHAPE CQKM | FLAT |
| MATERIAL MATT | OVERALL ALUMINUM ALLOY 6061 |
| SURFACE TREATMENT SFTT | OVERALL ANODIZE |
| STYLE DESIGNATOR STYL | — |
Manufacturer part numbers
Commercial part numbers cross-referenced to this NSN in the federal catalog — the parts that have been accepted as satisfying this stock number, and who makes them.
| Part number | CAGE | Manufacturer |
|---|---|---|
| 203160 | 86090 | EATON CORPORATION DBA AIRFRAME |
What it pays — so you can quote
The government's own price and demand record for this NSN — what past awards cleared at, so you know where to land your quote.
Latest unit price
—
Purchases
0
Total spend
—
Oct 19, 2026
Last purchased
1 · 1.0/yr
Purchase records
$7,030
Total demand
$7,030
Latest award total
Purchase history
No priced purchases on record for this NSN yet.
Related contract actions
Contract action totals, not unit prices — obligation amounts from USAspending for related awards, shown for context only. These do not appear on the price chart above.
| Action date | Award # | Recipient | Agency | Obligation |
|---|---|---|---|---|
| Oct 19, 2026 | SPE7M127V0670 ↗ | LEE AIR COMPANY, INC. | — | $7,030 |
Demand history
Who wins this item
Does one supplier win this every time, and are the winners on the listed-source list? One dot per award.
- Award in the last 2 years
- Older award
LEE AIR COMPANY, INC.
last award Oct 2026
EATON CORPORATION DBA AIRFRAME
no award yet
no awards on record
Listed source LEE AIR COMPANY, INC. won the only award on record. LEE AIR COMPANY, INC. won without being a listed source.
Open RFQs on DIBBS → DIBBS award history ↗
About this data
- Unit prices: DLA DIBBS award records — every row links to its government record.
- AMSC: latest observed value from DIBBS solicitation history as of Oct 20, 2026.
- Contract action totals: USAspending, context only.
- Data last refreshed: 2026-10-20.
- Full methodology →
Cite this page
Citation
NSN Explorer. "SEAT,VALVE." nsnexplorer.com, https://nsnexplorer.com/nsn/4820-01-055-4056/. Data as of November 7, 2026.
Link
https://nsnexplorer.com/nsn/4820-01-055-4056/