Acquisition method (AMC)
3
FSC 4730 × INVERTED NUT,TUBE COUPLING
INVERTED NUT,TUBE COUPLING
4730-00-288-9391 FSC 4730
NSN 4730-00-288-9391 (also written 4730002889391; NIIN 00-288-9391) is an inverted nut, tube coupling in Federal Supply Class 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. 17 manufacturer part numbers from 6 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 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.
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 |
|---|---|
| SMALLEST INSIDE DIAMETER BSPX | INCHES MINIMUM 0.380 AND INCHES MAXIMUM 0.382 |
| THREAD DIRECTION AAJF | RIGHT-HAND |
| TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED ACSV | INCHES NOMINAL 0.375 |
| THREAD CLASS AAJD | 2A |
| SPECIAL FEATURES FEAT | WEAPON SYSTEM ESSENTIAL |
| MATERIAL MATT | COPPER ALLOY |
| OVERALL LENGTH ABHP | INCHES NOMINAL 0.844 |
| WIDTH ACROSS FLATS ASDB | INCHES NOMINAL 0.625 |
| STYLE DESIGNATOR STYL | — |
| SCREW THREAD SERIES DESIGNATOR AJYP | UNS |
| THREAD SIZE ABUJ | 9/16-20 |
| CRITICALITY CODE JUSTIFICATION CRTL | FEAT |
| FABRICATION METHOD AARN | BAR STOCK, MACHINED |
| CASEHARDENING INDICATOR AASG | NOT CASE-HARDENED |
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 |
|---|---|---|
| 19986R1 | 29510 | KOMATSU AMERICAN INTL CO |
| 19986R1 | 31007 | NAVISTAR INTERNATIONAL CORPORATION DBA NAVISTAR |
| 19986R1 | 92679 | NAVISTAR INTL CORP MELROSE PARK ENGINE PLANT LOCATION /MELROSE PARK/ |
| 278953R91 | 29510 | KOMATSU AMERICAN INTL CO |
| 278953R91 | 31007 | NAVISTAR INTERNATIONAL CORPORATION DBA NAVISTAR |
| 28737 | 30327 | IMPERIAL |
| 28737R | 30327 | IMPERIAL |
| 441392 | 30327 | IMPERIAL |
| 45906 | 30327 | IMPERIAL |
| 67652D | 29510 | KOMATSU AMERICAN INTL CO |
| 67652D | 92679 | NAVISTAR INTL CORP MELROSE PARK ENGINE PLANT LOCATION /MELROSE PARK/ |
| 67652DX | 29510 | KOMATSU AMERICAN INTL CO |
| 67652DX | 31007 | NAVISTAR INTERNATIONAL CORPORATION DBA NAVISTAR |
| 67652DX | 92679 | NAVISTAR INTL CORP MELROSE PARK ENGINE PLANT LOCATION /MELROSE PARK/ |
| 81LB3-8 | 30327 | IMPERIAL |
| 8F8997 | 11083 | CATERPILLAR INC DIV CATERPILLAR DEFENSE |
| 8F8997 | U3363 | CATERPILLAR TRACTOR CO LTD |
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 29, 2026
Last purchased
1 · 1.0/yr
Purchase records
$2.55
Total demand
$2.55
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 29, 2026 | SPE7LX21D0087/SPE7LX26FBH2Y ↗ | ATLANTIC DIVING SUPPLY, INC. DBA ADS | — | $2.55 |
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
ATLANTIC DIVING SUPPLY, INC. DBA ADS
last award Sep 2026
CATERPILLAR INC DIV CATERPILLAR DEFENSE
no award yet
no awards on record
Listed source CATERPILLAR TRACTOR CO LTD
no award yet
no awards on record
Listed source IMPERIAL
no award yet
no awards on record
Listed source KOMATSU AMERICAN INTL CO
no award yet
no awards on record
Listed source NAVISTAR INTERNATIONAL CORPORATION DBA NAVISTAR
no award yet
no awards on record
Listed source NAVISTAR INTL CORP MELROSE PARK ENGINE PLANT LOCATION /MELROSE PARK/
no award yet
no awards on record
Listed source ATLANTIC DIVING SUPPLY, INC. DBA ADS won the only award on record. ATLANTIC DIVING SUPPLY, INC. DBA ADS 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: 2026-09-30.
- Full methodology →
Cite this page
Citation
NSN Explorer. "INVERTED NUT,TUBE COUPLING." nsnexplorer.com, https://nsnexplorer.com/nsn/4730-00-288-9391/. Data as of October 19, 2026.
Link
https://nsnexplorer.com/nsn/4730-00-288-9391/