Acquisition method (AMC)
1
FSC 4820 × SEAT,VALVE
SEAT,VALVE
4820-01-493-7963 FSC 4820
NSN 4820-01-493-7963 (also written 4820014937963; NIIN 01-493-7963) is a seat, valve in Federal Supply Class 4820, Valves, Nonpowered. 4 manufacturer part numbers from 2 suppliers are on record. No purchases are on record yet.
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 |
|---|---|
| BODY OUTSIDE DIAMETER ADAR | INCHES NOMINAL 11.905 |
| BODY INSIDE DIAMETER ADAS | INCHES NOMINAL 10.375 |
| END ITEM IDENTIFICATION AGAV | 4820-01-491-1347 VALVE, SAFETY RELIEF P/N 6937523 ASSEMBLY 100. W/S SEAWOLF CLASS SSN |
| SEAL ACCOMMODATION TYPE AJSH | GROOVED |
| SEATING SURFACE SHAPE CQKM | RADIAL |
| SPECIAL FEATURES FEAT | USED ON MOTOR, TLTA S. MADE FROM 1-3/8 INCH THICK SHEET. HAS 9 GROOVES 1/32 R LOCATED RADIALLY EQUALLY SPACED AND MACHINED ON BOTH SURFACES |
| MATERIAL MATT | SEAT PLASTIC POLYAMIDE NYLON |
| MATERIAL DOCUMENT AND CLASSIFICATION MDCL | SEAT ASSN STD SINGLE MATERIAL RESPONSE L--410 TY 6 TO 6 |
| 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 |
|---|---|---|
| 6937523 | 53711 | NAVAL SEA SYSTEMS COMMAND |
| 6937523 ITEM 81 | 53711 | NAVAL SEA SYSTEMS COMMAND |
| L-P-410 TYPE 6/ | 81348 | FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC |
| L-P-410 TYPE 6/6 | 81348 | FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC |
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
—
—
Last purchased
—
Purchase records
—
Total demand
—
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.
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-27-T-0969 | Oct 23, 2026 | Nov 2, 2026 | 7 | 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 23, 2026.
- Contract action totals: USAspending, context only.
- Full methodology →
Cite this page
Citation
NSN Explorer. "SEAT,VALVE." nsnexplorer.com, https://nsnexplorer.com/nsn/4820-01-493-7963/. Data as of November 7, 2026.
Link
https://nsnexplorer.com/nsn/4820-01-493-7963/