AMSC / AMC
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FSC 4320 × RING,WEARING
RING,WEARING
4320-00-383-4370
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 |
|---|---|
| DISTANCE BETWEEN FLANGES AGRS | INCHES NOMINAL 0.766 |
| CORNER SHAPE BZLX | OUTSIDE LEFT CORNER SQUARE |
| CORNER SHAPE BZLX | OUTSIDE RIGHT CORNER SQUARE |
| DISTANCE BELOW CENTERLINE AYRM | INCHES NOMINAL 0.094 |
| DISTANCE FROM END AYRS | INCHES NOMINAL 0.281 |
| CORNER SHAPE BZLX | INSIDE LEFT CORNER SQUARE |
| CORNER SHAPE BZLX | INSIDE RIGHT CORNER ROUND |
| BODY STYLE AAQL | — |
| OVERALL LENGTH ABHP | INCHES NOMINAL 1.266 |
| BODY OUTSIDE DIAMETER ADAR | INCHES NOMINAL 6.594 |
| END TO FLANGE DISTANCE AJFM | INCHES NOMINAL 1.000 |
| RIGHT SIDE FLANGE THICKNESS ADXM | INCHES NOMINAL 0.250 |
| CORNER RADIUS ADNU | INSIDE RIGHT CORNER INCHES NOMINAL 0.250 |
| LEFT SIDE FLANGE THICKNESS ADXL | INCHES NOMINAL 0.250 |
| LARGEST EXTERNAL ANCHOR FLANGE RADIUS AYRL | INCHES NOMINAL 3.500 |
| BODY INSIDE DIAMETER ADAS | INCHES NOMINAL 5.938 |
| SMALLEST EXTERNAL ANCHOR FLANGE RADIUS AYRK | INCHES NOMINAL 3.219 |
| INTERNAL FLANGE INSIDE DIAMETER AYRE | INCHES NOMINAL 5.375 |
| INTERNAL FLANGE WIDTH AYRG | INCHES NOMINAL 0.219 |
| MATERIAL MATT | COPPER ALLOY |
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 |
|---|---|---|
| 654B0261 | 63857 | CIRCOR NAVAL SOLUTIONS LLC DBA WARREN PUMPS |
| 654B0261C051A | 63857 | CIRCOR NAVAL SOLUTIONS LLC DBA WARREN PUMPS |
| 999R0341PC34 | 63857 | CIRCOR NAVAL SOLUTIONS LLC DBA WARREN PUMPS |
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 | |
|---|---|---|---|---|---|
| SPE7M1-26-T-267C | Aug 7, 2026 | Aug 24, 2026 | 3 | 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 →