Acquisition method (AMC)
3
FSC 4320 × RING,WEARING
RING,WEARING
4320-00-139-3973 FSC 4320
NSN 4320-00-139-3973 (also written 4320001393973; NIIN 00-139-3973) is a ring, wearing in Federal Supply Class 4320, Power and Hand Pumps. 3 manufacturer part numbers from 1 supplier 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 to be bought directly from the actual manufacturer (AMC 3).
Suffix (AMSC)
L
Competition
Coded for a named source
AMC 3: buy directly from the actual manufacturer, second or later time. AMSC L: annual buy value is below the screening threshold. 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.
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 |
|---|---|---|
| 9-0145-01 | 83130 | AIR & LIQUID SYSTEMS CORPORATION DBA BUFFALO PUMPS |
| NA1098-1 | 83130 | AIR & LIQUID SYSTEMS CORPORATION DBA BUFFALO PUMPS |
| NA1098US | 83130 | AIR & LIQUID SYSTEMS CORPORATION DBA BUFFALO 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
—
Purchases
0
Total spend
—
Sep 1, 2026
Last purchased
2 · 2.0/yr
Purchase records
$6,792
Total demand
$3,396
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 |
|---|---|---|---|---|
| Aug 20, 2026 | SPE7M326V4228 ↗ | ECI DEFENSE GROUP, INC. DIV ECI-GA | — | $3,396 |
| Sep 1, 2026 | SPE7M126PA061 ↗ | ECI DEFENSE GROUP, INC. DIV ECI-GA | — | $3,396 |
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
ECI DEFENSE GROUP, INC. DIV ECI-GA
last award Sep 2026
AIR & LIQUID SYSTEMS CORPORATION DBA BUFFALO PUMPS
no award yet
no awards on record
Listed source ECI DEFENSE GROUP, INC. DIV ECI-GA won 2 of the last 2 awards. ECI DEFENSE GROUP, INC. DIV ECI-GA 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: 2026-11-02.
- Full methodology →
Cite this page
Citation
NSN Explorer. "RING,WEARING." nsnexplorer.com, https://nsnexplorer.com/nsn/4320-00-139-3973/. Data as of November 7, 2026.
Link
https://nsnexplorer.com/nsn/4320-00-139-3973/