Acquisition method (AMC)
3
FSC 4320 × RING,WEARING
RING,WEARING
4320-01-493-3805 FSC 4320
NSN 4320-01-493-3805 (also written 4320014933805; NIIN 01-493-3805) is a ring, wearing in Federal Supply Class 4320, Power and Hand Pumps. 4 manufacturer part numbers from 1 supplier 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)
D
Competition
Coded for a named source
AMC 3: buy directly from the actual manufacturer, second or later time. AMSC D: the data needed to compete the part is unavailable or cannot be obtained economically. 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 |
|---|---|
| END ITEM IDENTIFICATION AGAV | CVN-76, 68, AND 69 STEAM REBOILER FEED PUMP |
| SPECIAL FEATURES FEAT | VALVE BRONZE MATERIAL; MANUFACTURER MATERIAL SPEC. C031A; UPPER CASE RING .050 U-SIZE |
| MATERIAL MATT | COPPER ALLOY |
| MATERIAL DOCUMENT AND CLASSIFICATION MDCL | ASSN STD 1ST MATERIAL RESPONSE AST- B271 ALLOY C9220 OR ASSN STD 1ST MATERIAL RESPONSE AST- B505 ALLOY C9220 OR ASSN STD 1ST MATERIAL RESPONSE AST- B584 ALLOY C9220 |
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 |
|---|---|---|
| 0654C0560C031A | 63857 | CIRCOR NAVAL SOLUTIONS LLC DBA WARREN PUMPS |
| 654C0560 | 63857 | CIRCOR NAVAL SOLUTIONS LLC DBA WARREN PUMPS |
| 999F0904 | 63857 | CIRCOR NAVAL SOLUTIONS LLC DBA WARREN PUMPS |
| 999F0904 FIND NO. 8 | 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
$16,531.00
Purchases
1
Total spend
$16,531
Oct 6, 2026
Last purchased
2 · 2.0/yr
Purchase records
$33,062
Total demand
$16,531.00
Latest unit price
Purchase history
| Awarded | Qty | Unit price | Total | Supplier | Agency | Source |
|---|---|---|---|---|---|---|
| Oct 6, 2026 | 1 | $16,531.00 | $16,531 | CIRCOR NAVAL SOLUTIONS LLC DBA WARREN PUMPS (63857) | Unknown | Source ↗ |
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 6, 2026 | SPE7M127P0170 ↗ | CIRCOR NAVAL SOLUTIONS LLC DBA WARREN PUMPS | — | $16,531 |
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
CIRCOR NAVAL SOLUTIONS LLC DBA WARREN PUMPS
last award Oct 2026
CIRCOR NAVAL SOLUTIONS LLC DBA WARREN PUMPS won the only award on record.
| Solicitation | Issued | Closes / closed | Qty | Status | |
|---|---|---|---|---|---|
| SPE7M1-27-T-0047 | Oct 2, 2026 | Oct 13, 2026 | 1 | Cancelled | View at DIBBS → |
| SPE7M1-26-T-341W | Sep 11, 2026 | Sep 21, 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: 2026-10-08.
- Full methodology →
Cite this page
Citation
NSN Explorer. "RING,WEARING." nsnexplorer.com, https://nsnexplorer.com/nsn/4320-01-493-3805/. Data as of October 19, 2026.
Link
https://nsnexplorer.com/nsn/4320-01-493-3805/