Acquisition method (AMC)
3
FSC 5331 × O-RING
O-RING
5331-01-256-0430 FSC 5331
NSN 5331-01-256-0430 (also written 5331012560430; NIIN 01-256-0430) is an o-ring in Federal Supply Class 5331, O-Rings. 2 manufacturer part numbers from 1 supplier are on record. The government has 1 open solicitation for it.
Open for bid
1 open solicitation on record right now — quantity, close date, and where to submit.
| Solicitation | Qty | Status | |
|---|---|---|---|
| SPE7LX-27-U-0217 | 27 | Closes in 10d | Bid → |
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 |
|---|---|
| CROSS-SECTIONAL HEIGHT ADVN | INCHES MINIMUM 0.100 AND INCHES MAXIMUM 0.106 |
| CENTER HOLE DIAMETER ADYT | INCHES MINIMUM 0.419 AND INCHES MAXIMUM 0.429 |
| MATERIAL MATT | RUBBER POLYESTER URETHANE CLASS AU |
| PROPRIETARY CHARACTERISTICS PRPY | PACS |
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 |
|---|---|---|
| 40398-4 FIND NO | 55378 | TRAC REGULATOR CO., INC. DBA TRAC REGULATOR CO INC |
| 432-01 | 55378 | TRAC REGULATOR CO., INC. DBA TRAC REGULATOR CO INC |
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
—
Oct 8, 2026
Last purchased
1 · 1.0/yr
Purchase records
$4,760
Total demand
$4,760
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 |
|---|---|---|---|---|
| Oct 8, 2026 | SPE7L425D62SG/SPE7L026F2843 ↗ | — | — | $4,760 |
Demand history
Every solicitation we've indexed for this NSN, open and closed — 3 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
CAGE 7RY10
last award Oct 2026
TRAC REGULATOR CO., INC. DBA TRAC REGULATOR CO INC
no award yet
no awards on record
Listed source CAGE 7RY10 won the only award on record. CAGE 7RY10 won without being a listed source.
| Solicitation | Issued | Closes / closed | Qty | Status | |
|---|---|---|---|---|---|
| SPE7LX-27-U-0217 | Oct 15, 2026 | Oct 29, 2026 | 27 | Open | View at DIBBS → |
| SPE7LX-26-U-004B | Sep 15, 2026 | Sep 29, 2026 | 30 | Cancelled | View at DIBBS → |
| SPE7L1-26-T-12J9 | Sep 16, 2026 | Sep 28, 2026 | 19 | 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: 2026-10-10.
- Full methodology →
Cite this page
Citation
NSN Explorer. "O-RING." nsnexplorer.com, https://nsnexplorer.com/nsn/5331-01-256-0430/. Data as of October 19, 2026.
Link
https://nsnexplorer.com/nsn/5331-01-256-0430/