AMSC / AMC
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FSC 4820 × VALVE,CHECK
VALVE,CHECK
4820-00-341-3911
Open for bid
No open solicitations on record for this NSN right now.
Can you win it?
Restricted — approved sources only, based on the latest AMSC/AMC on record.
Competition
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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 |
|---|---|
| NOMINAL THREAD SIZE CQJX | FIRST END INCHES 0.563 |
| MATERIAL MATT | BODY STEEL COMP 630 |
| MATERIAL MATT | FLOW CONTROL DEVICE STEEL CORROSION RESISTING |
| NOMINAL THREAD SIZE CQJX | SECOND END INCHES 0.438 |
| THREAD SERIES DESIGNATOR THSD | ALL ENDS UNJS |
| MEDIA FOR WHICH DESIGNED MEDA | SINGLE RESPONSE HYDRAULIC FLUID, MINERAL BASE |
| SURFACE TREATMENT SFTT | PASSIVATE |
| THREAD DIRECTION AAJF | ALL ENDS RIGHT-HAND |
| MATERIAL MATT | SEAT STEEL COMP 630 |
| MATERIAL DOCUMENT AND CLASSIFICATION MDCL | BODY ASSN STD SINGLE MATERIAL RESPONSE A-S 5643 |
| MATERIAL DOCUMENT AND CLASSIFICATION MDCL | SEAT ASSN STD SINGLE MATERIAL RESPONSE A-S 5643 |
| THREAD CLASS AAJD | EA |
| THREAD QUANTITY PER INCH CMLP | 20 |
| FLOW CONTROL DEVICE ADQU | DISK |
| DISK LOADING METHOD ADSU | SPRING |
| MAXIMUM OPERATING TEMP AEHZ | SINGLE RESPONSE FAHRENHEIT 450.0 |
| CONNECTION STYLE AHNC | — |
| VALVE OPERATION METHOD AQLR | AUTOMATIC |
| CONNECTION TYPE AWLS | ALL ENDS THREADED EXTERNAL BOSS |
| MOUNTING POSITION BBJX | HORIZONTAL OR VERTICAL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION STDC | MIL SPEC SINGLE TREATMENT RESPONSE -IL-S-5002 |
| THREAD QUANTITY PER INCH CMLP | 24 |
| STYLE DESIGNATOR STYL | — |
| OPERATING PRESSURE CQQF | SINGLE RESPONSE POUNDS PER SQUARE INCH (PSI) MAXIMUM 3000.0 |
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 |
|---|---|---|
| 10109253 | A486G | NIMIKKEISTOKESKUS NCB FINLAND |
| 4C2640-3 | 99240 | CRISSAIR INC DIV ESCO TECHNOLOGIES |
| ST7M262-4 | 76301 | THE BOEING COMPANY DIV DEFENSE |
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
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Purchases
0
Total spend
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Last purchased
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Purchase records
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Total demand
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Latest award total
Price history
What the government paid per unit
Fewer than two priced purchases on record — see the table below.
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.
No related contract actions on record.
Demand history
Every solicitation we've indexed for this NSN, open and closed — 1 on record. Closed RFQs (expired, cancelled, or awarded) stay here as a record of past demand; they never get removed.
| Solicitation | Issued | Closes / closed | Qty | Status | |
|---|---|---|---|---|---|
| SPE7MC-26-T-165T | Aug 4, 2026 | Aug 19, 2026 | 14 | Expired | View at DIBBS → |
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.
- Contract action totals: USAspending, context only.
- Full methodology →