Acquisition method (AMC)
3
FSC 4820 × VALVE,SAFETY RELIEF
VALVE,SAFETY RELIEF
4820-00-008-3506 FSC 4820
NSN 4820-00-008-3506 (also written 4820000083506; NIIN 00-008-3506) is a valve, safety relief in Federal Supply Class 4820, Valves, Nonpowered. 4 manufacturer part numbers from 4 suppliers are 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 |
|---|---|
| STYLE DESIGNATOR STYL | — |
| OPENING PRESSURE SETTING CSDC | POUNDS PER SQUARE INCH 100.0 |
| MATERIAL MATT | OVERALL ALUMINUM ALLOY |
| VALVE OPERATION METHOD AQLR | AUTOMATIC |
| OPERATING PRESSURE CQQF | SINGLE RESPONSE POUNDS PER SQUARE INCH (PSI) MAXIMUM 1500.0 |
| FLOW CONTROL DEVICE ADQU | POPPET |
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 |
|---|---|---|
| 2529882 | 06848 | HONEYWELL INTERNATIONAL INC DIV AEROSPACE-SOUTH BEND (BENDIX DR) |
| 2529882 | 07213 | HONEYWELL AEROSPATIALE INC |
| 2529882 | 0SML3 | AERO INTERNATIONAL, LLC DBA AMS ENGINEERED SOLUTIONS |
| 2529882 | 59501 | UNISON INDUSTRIES LLC |
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
$2,180.95
Purchases
1
Total spend
$2,181
Oct 30, 2026
Last purchased
2 · 2.0/yr
Purchase records
$4,362
Total demand
$2,180.95
Latest unit price
Purchase history
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 30, 2026 | SPE7M127V1256 ↗ | — | — | $2,181 |
Demand history
Every solicitation we've indexed for this NSN, open and closed — 2 on record. Closed RFQs (expired, cancelled, or awarded) stay here as a record of past demand; they never get removed.
Buying rhythm
How often does the government buy this item, and how long since the last time? Every solicitation and award on one line.
- Solicitation posted
- Award made
Dot size shows quantity. A faint bar joins a solicitation to the award made against it.
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
CAGE 99EL2
last award Oct 2026
AERO INTERNATIONAL, LLC DBA AMS ENGINEERED SOLUTIONS
no award yet
no awards on record
Listed source HONEYWELL AEROSPATIALE INC
no award yet
no awards on record
Listed source HONEYWELL INTERNATIONAL INC DIV AEROSPACE-SOUTH BEND (BENDIX DR)
no award yet
no awards on record
Listed source UNISON INDUSTRIES LLC
no award yet
no awards on record
Listed source CAGE 99EL2 won the only award on record. CAGE 99EL2 won without being a listed source.
| Solicitation | Issued | Closes / closed | Qty | Status | |
|---|---|---|---|---|---|
| SPE7MC-26-T-245G | Sep 1, 2026 | Sep 11, 2026 | 3 | Expired | View at DIBBS → |
| SPE7MC-26-T-170X | Aug 7, 2026 | Aug 17, 2026 | 1 | 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 as of Oct 10, 2026.
- Contract action totals: USAspending, context only.
- Data last refreshed: 2026-11-01.
- Full methodology →
Cite this page
Citation
NSN Explorer. "VALVE,SAFETY RELIEF." nsnexplorer.com, https://nsnexplorer.com/nsn/4820-00-008-3506/. Data as of November 7, 2026.
Link
https://nsnexplorer.com/nsn/4820-00-008-3506/