Acquisition method (AMC)
1
FSC 4730 × INVERTED NUT,TUBE COUPLING
INVERTED NUT,TUBE COUPLING
4730-00-278-5490 FSC 4730
NSN 4730-00-278-5490 (also written 4730002785490; NIIN 00-278-5490) is an inverted nut, tube coupling in Federal Supply Class 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. 17 manufacturer part numbers from 11 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)
C
Competition
Coded for competition
AMC 1: suitable for competitive acquisition, second or later time. AMSC C: needs engineering source approval; other sources must qualify first. 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 |
|---|---|
| SCREW THREAD SERIES DESIGNATOR AJYP | UNF |
| THREAD DIRECTION AAJF | RIGHT-HAND |
| CRITICALITY CODE JUSTIFICATION CRTL | FEAT |
| END ITEM IDENTIFICATION AGAV | SUPPORT EQUIPMENT--C-5 AIRCRAFT, T-38 AIRCRAFT, B-52 AIRCRAFT, T-37 AIRCRAFT, OV-10A AIRCRAFT; AIRCRAFT, F-16; SHOP EQUIPMENT, CONTACT MAINT, TRK-MTD, SET 3, TAM B19457; TRACTOR, FLIGHTLINE TOWING |
| WIDTH ACROSS FLATS ASDB | INCHES NOMINAL 0.313 |
| SPECIAL FEATURES FEAT | WEAPON SYSTEM ESSENTIAL |
| STYLE DESIGNATOR STYL | — |
| THREAD SIZE ABUJ | 5/16-24 |
| TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED ACSV | INCHES NOMINAL 0.125 |
| CASEHARDENING INDICATOR AASG | NOT CASE-HARDENED |
| MATERIAL MATT | COPPER ALLOY |
| THREAD CLASS AAJD | 2A |
| SEAT RADIUS AJFZ | INCHES NOMINAL 0.219 |
| SMALLEST INSIDE DIAMETER BSPX | INCHES NOMINAL 0.128 |
| OVERALL LENGTH ABHP | INCHES NOMINAL 0.500 |
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 |
|---|---|---|
| 106-10002 | 79470 | DANA CORP WEATHERHEAD DIV |
| 106-10102 | 04255 | DANA CORP WAREHOUSE OPNS FORT WAYNE WAREHOUSE |
| 121634 | 24617 | GENERAL MOTORS CORP |
| 181D1-8 | 30327 | IMPERIAL |
| 2-050110 | 04255 | DANA CORP WAREHOUSE OPNS FORT WAYNE WAREHOUSE |
| 2-050110 | 13174 | PARKER HANNIFIN CORP HOSE PRODUCTS DIV |
| 2-050110 | 24617 | GENERAL MOTORS CORP |
| 2-050110 | 30327 | IMPERIAL |
| 2-050110 | 30760 | INGERSOLL RAND CO |
| 2-050110 | 56442 | DIAMOND REO TRUCK CO |
| 2-050110 | 72582 | ROLLS-ROYCE SOLUTIONS AMERICA INC DBA ROLLS-ROYCE SOLUTIONS AMERICA INC |
| 2-050110 | 79470 | DANA CORP WEATHERHEAD DIV |
| 2-050110 | 81343 | SOCIETY OF AUTOMOTIVE ENGINEERS INC |
| 6100X2 | 01276 | DANFOSS POWER SOLUTIONS II, LLC DIV FLUID CONVEYANCE |
| 6100X2 | 79470 | DANA CORP WEATHERHEAD DIV |
| 81TS-2 | 93061 | PARKER-HANNIFIN CORP DIV FLUID SYSTEM CONNECTOR DIVISION |
| X1086T38 | 30760 | INGERSOLL RAND 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
—
Purchases
0
Total spend
—
Sep 8, 2026
Last purchased
1 · 1.0/yr
Purchase records
$3,542
Total demand
$3,542
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 8, 2026 | SPE7M226V4291 ↗ | — | — | $3,542 |
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
CAGE 9SUC3
last award Sep 2026
DANA CORP WAREHOUSE OPNS FORT WAYNE WAREHOUSE
no award yet
no awards on record
Listed source DANA CORP WEATHERHEAD DIV
no award yet
no awards on record
Listed source DANFOSS POWER SOLUTIONS II, LLC DIV FLUID CONVEYANCE
no award yet
no awards on record
Listed source DIAMOND REO TRUCK CO
no award yet
no awards on record
Listed source GENERAL MOTORS CORP
no award yet
no awards on record
Listed source IMPERIAL
no award yet
no awards on record
Listed source INGERSOLL RAND CO
no award yet
no awards on record
Listed source CAGE 9SUC3 won the only award on record. CAGE 9SUC3 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: 2026-10-24.
- Full methodology →
Cite this page
Citation
NSN Explorer. "INVERTED NUT,TUBE COUPLING." nsnexplorer.com, https://nsnexplorer.com/nsn/4730-00-278-5490/. Data as of November 7, 2026.
Link
https://nsnexplorer.com/nsn/4730-00-278-5490/