Acquisition method (AMC)
1
FSC 4730 × NUT,UNION
NUT,UNION
4730-01-121-2750 FSC 4730
NSN 4730-01-121-2750 (also written 4730011212750; NIIN 01-121-2750) is a nut, union in Federal Supply Class 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. 4 manufacturer part numbers from 2 suppliers 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 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 |
|---|---|
| THREAD CLASS AAJD | 2B |
| THREAD DIRECTION AAJF | RIGHT-HAND |
| SHOULDER WIDTH ABNK | INCHES NOMINAL 0.300 |
| NUT STYLE ACTA | — |
| NUT DIAMETER ACTD | INCHES NOMINAL 3.500 |
| NUT HEIGHT ADEA | INCHES NOMINAL 1.500 |
| SMALLEST INSIDE DIAMETER BSPX | INCHES NOMINAL 2.650 |
| THREAD SERIES BZRR | UN |
| SHOULDER STEP WIDTH CFQB | INCHES NOMINAL 0.385 |
| SHOULDER SEAT DIAMETER CFQC | INCHES NOMINAL 2.660 |
| THREAD QUANTITY PER INCH CMLP | 12 |
| NOMINAL THREAD SIZE CQJX | INCHES 3.062 |
| SPECIAL FEATURES FEAT | 8 RIBS EQUALLY SPACED ON OUTSIDE DIA |
| MATERIAL MATT | OVERALL COPPER ALLOY |
| MATERIAL DOCUMENT AND CLASSIFICATION MDCL | OVERALL MIL SPEC SINGLE MATERIAL RESPONSE -IL-C-20159,TYE I |
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 |
|---|---|---|
| 2621-713-01 | 96169 | ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT |
| 2621-713-01 PC2 | 71905 | DERBYSHIRE MACHINE & TOOL CO |
| 2621-713-01 PIECE 20 | 96169 | ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT |
| 2621-713-01PC20 | 71905 | DERBYSHIRE MACHINE & TOOL CO |
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
$521.35
Purchases
1
Total spend
$2,607
Oct 6, 2026
Last purchased
2 · 2.0/yr
Purchase records
$5,214
Total demand
$521.35
Latest unit price
Purchase history
| Awarded | Qty | Unit price | Total | Supplier | Agency | Source |
|---|---|---|---|---|---|---|
| Oct 6, 2026 | 5 | $521.35 | $2,607 | BEC SYSTEMS LLC DBA BEC MACHINE PRODUCTS (0JC12) | 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 | SPE7M427V0134 ↗ | BEC SYSTEMS LLC DBA BEC MACHINE PRODUCTS | — | $2,607 |
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.
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
BEC SYSTEMS LLC DBA BEC MACHINE PRODUCTS
last award Oct 2026
DERBYSHIRE MACHINE & TOOL CO
no award yet
no awards on record
Listed source ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT
no award yet
no awards on record
Listed source BEC SYSTEMS LLC DBA BEC MACHINE PRODUCTS won the only award on record. BEC SYSTEMS LLC DBA BEC MACHINE PRODUCTS won without being a listed source.
| Solicitation | Issued | Closes / closed | Qty | Status | |
|---|---|---|---|---|---|
| SPE7M4-26-T-437L | Sep 25, 2026 | Oct 5, 2026 | 5 | 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. "NUT,UNION." nsnexplorer.com, https://nsnexplorer.com/nsn/4730-01-121-2750/. Data as of October 19, 2026.
Link
https://nsnexplorer.com/nsn/4730-01-121-2750/