Acquisition method (AMC)
1
FSC 4820 × VALVE,SAFETY RELIEF
VALVE,SAFETY RELIEF
4820-01-105-1952 FSC 4820
NSN 4820-01-105-1952 (also written 4820011051952; NIIN 01-105-1952) is a valve, safety relief in Federal Supply Class 4820, Valves, Nonpowered. 4 manufacturer part numbers from 2 suppliers are on record. It was last purchased in Sep 2026.
Open for bid
No open solicitations on record for this NSN right now.
Can you win it?
This item is coded as suitable for competitive acquisition (AMC 1).
Suffix (AMSC)
G
Competition
Coded for competition
AMC 1: suitable for competitive acquisition, second or later time. AMSC G: the government has a complete data package and the rights to use it. 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 |
|---|---|
| THREAD DIRECTION AAJF | FIRST END RIGHT-HAND |
| FLOW CONTROL DEVICE ADQU | POPPET |
| MAXIMUM OPERATING TEMP AEHZ | SINGLE RESPONSE FAHRENHEIT 200.0 |
| CONNECTION STYLE AHNC | — |
| VALVE OPERATION METHOD AQLR | AUTOMATIC |
| CONNECTION TYPE AWLS | FIRST END THREADED EXTERNAL PIPE |
| NOMINAL THREAD SIZE CQJX | FIRST END INCHES 0.250 |
| OPERATING PRESSURE CQQF | SINGLE RESPONSE POUNDS PER SQUARE INCH (PSI) MAXIMUM 300.0 |
| OPENING PRESSURE SETTING CSDC | POUNDS PER SQUARE INCH 135.0 |
| MATERIAL MATT | SEAT RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR |
| MATERIAL MATT | BODY COPPER ALLOY |
| MEDIA FOR WHICH DESIGNED MEDA | SINGLE RESPONSE AIR |
| STYLE DESIGNATOR STYL | — |
| THREAD SERIES DESIGNATOR THSD | FIRST END NPTF |
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 |
|---|---|---|
| 16-004-016 | 43990 | NORGREN C A CO |
| 16-004-016-2 | 43990 | NORGREN C A CO |
| 5338197 | 53711 | NAVAL SEA SYSTEMS COMMAND |
| 5338197-2 | 53711 | NAVAL SEA SYSTEMS COMMAND |
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
—
Sep 3, 2026
Last purchased
1 · 1.0/yr
Purchase records
$5,984
Total demand
$5,984
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 |
|---|---|---|---|---|
| Sep 3, 2026 | SPE7L126P8839 ↗ | BRIGHT LIGHTS USA, INC DBA BLUSA DEFENSE MANUFACTURING | — | $5,984 |
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
BRIGHT LIGHTS USA, INC DBA BLUSA DEFENSE MANUFACTURING
last award Sep 2026
NAVAL SEA SYSTEMS COMMAND
no award yet
no awards on record
Listed source NORGREN C A CO
no award yet
no awards on record
Listed source BRIGHT LIGHTS USA, INC DBA BLUSA DEFENSE MANUFACTURING won the only award on record. BRIGHT LIGHTS USA, INC DBA BLUSA DEFENSE MANUFACTURING 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 27, 2026.
- Contract action totals: USAspending, context only.
- Data last refreshed: 2026-10-25.
- Full methodology →
Cite this page
Citation
NSN Explorer. "VALVE,SAFETY RELIEF." nsnexplorer.com, https://nsnexplorer.com/nsn/4820-01-105-1952/. Data as of November 7, 2026.
Link
https://nsnexplorer.com/nsn/4820-01-105-1952/