Acquisition method (AMC)
1
FSC 4730 × NUT,TUBE COUPLING
NUT,TUBE COUPLING
4730-01-543-0356 FSC 4730
NSN 4730-01-543-0356 (also written 4730015430356; NIIN 01-543-0356) is a nut, tube coupling in Federal Supply Class 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. 8 manufacturer part numbers from 3 suppliers 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 as suitable for competitive acquisition (AMC 1).
Suffix (AMSC)
T
Competition
Coded for competition
AMC 1: suitable for competitive acquisition, second or later time. AMSC T: handled under qualified products list procedures. 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 | 3B |
| THREAD DIRECTION AAJF | RIGHT-HAND |
| NUT STYLE ACTA | — |
| NUT HEIGHT ADEA | INCHES MINIMUM 0.710 AND INCHES MAXIMUM 0.730 |
| WIDTH ACROSS FLATS ASDB | INCHES NOMINAL 0.562 |
| LENGTH TO SHOULDER BRQL | INCHES MINIMUM 0.537 AND INCHES MAXIMUM 0.557 |
| SMALLEST INSIDE DIAMETER BSPX | INCHES MINIMUM 0.300 AND INCHES MAXIMUM 0.305 |
| THREAD SERIES BZRR | UNIFIED NATIONAL JOINT FINE (UNJF) |
| THREAD QUANTITY PER INCH CMLP | 20 |
| NOMINAL THREAD SIZE CQJX | INCHES 0.438 |
| NOMINAL TUBE OUTSIDE DIAMETER CQRJ | INCHES 0.250 |
| SEAT ANGLE CRRB | DEGREES NOMINAL 45.0 |
| PART NAME ASSIGNED BY CONTROLLING AGENCY CXCY | NUT,SLEEVE COUPLING,FLARELESS |
| SPECIAL FEATURES FEAT | CORROSION RESISTANT STEEL (15-5) W/ CADMIUM PLATING |
| MATERIAL MATT | OVERALL STEEL |
| SURFACE TREATMENT SFTT | OVERALL CADMIUM |
| SPECIFICATION/STANDARD DATA ZZZK | PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD 81343 - AS21921 |
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 |
|---|---|---|
| 4730015430356 | A00AM | E.C.A ETABLISSEMENT CENTRAL DES APPROVISIONNEMENTS DES FORCES ARMEES ROYALES |
| AS18280 | 0U583 | SAE INTERNATIONAL DBA SAE INTERNATIONAL |
| AS18280 | 81343 | SOCIETY OF AUTOMOTIVE ENGINEERS INC |
| AS21921 | 0U583 | SAE INTERNATIONAL DBA SAE INTERNATIONAL |
| AS21921 | 81343 | SOCIETY OF AUTOMOTIVE ENGINEERS INC |
| MS21921V4P | 0U583 | SAE INTERNATIONAL DBA SAE INTERNATIONAL |
| MS21921V4P | 81343 | SOCIETY OF AUTOMOTIVE ENGINEERS INC |
| SAE-AS18280 | 0U583 | SAE INTERNATIONAL DBA SAE INTERNATIONAL |
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 24, 2026
Last purchased
1 · 1.0/yr
Purchase records
$8,880
Total demand
$8,880
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 |
|---|---|---|---|---|
| Sep 24, 2026 | SPE7M125V1693 ↗ | BOEING DISTRIBUTION SERVICES X, INC. | — | $8,880 |
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
BOEING DISTRIBUTION SERVICES X, INC.
last award Sep 2026
E.C.A ETABLISSEMENT CENTRAL DES APPROVISIONNEMENTS DES FORCES ARMEES ROYALES
no award yet
no awards on record
Listed source SAE INTERNATIONAL DBA SAE INTERNATIONAL
no award yet
no awards on record
Listed source SOCIETY OF AUTOMOTIVE ENGINEERS INC
no award yet
no awards on record
Listed source BOEING DISTRIBUTION SERVICES X, INC. won the only award on record. BOEING DISTRIBUTION SERVICES X, INC. 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 10, 2026.
- Contract action totals: USAspending, context only.
- Data last refreshed: 2026-09-27.
- Full methodology →
Cite this page
Citation
NSN Explorer. "NUT,TUBE COUPLING." nsnexplorer.com, https://nsnexplorer.com/nsn/4730-01-543-0356/. Data as of October 19, 2026.
Link
https://nsnexplorer.com/nsn/4730-01-543-0356/