NSN catalog · 90,963 partsCatalog › Pipe, Tubing, Hose, and Fittings › FSC 4730 › 4730-00-554-8015
Tube Coupling Nut P/N MS21921-4
In stock — 12 on our U.S. shelfNSN 4730-00-554-8015 4730005548015 NIIN 005548015
SECO Parts has 12 in stock of NSN 4730-00-554-8015 — Tube Coupling Nut — on our own shelf in Augusta, GA: a stocking supplier, not a broker. Low-cost part: quoted by the line, $50 minimum per line; quantity pricing on request.
One part, one step — answered within one business day. Several parts? and send them together.
- Ships in 1–3 business days from Augusta, GA
- Certificate of Conformance on request
- PO, GPC & major cards
- $50 minimum order — smaller requests still get a quote
- 30-day returns · terms
- FLIS item name
- NUT,TUBE COUPLING
- SECO description
- NUT TUBE COUPLING
- Federal supply class
- FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
- Used on
- Medium Self-Propelled Howitzer (2350-01-031-0586)
Availability & condition
| Condition | Code | Qty on shelf |
|---|---|---|
| New Surplus | NS | 12 |
| Total | 12 |
Quantities are live from SECO's inventory system, not estimated.
Also known as:
4730-00-554-8015 005548015 MS21921-4 4730-554-8015 AP2109T04 AP2109T4 MS21921D4
Get a quote
Build a list across as many parts as you need, send it once, get one quote back — answered within one business day, usually the same day. POs and GPC welcome. $50 minimum order.
More to tell us? Need-by date, ship-to, your own RFQ document
Specifications
- Thread quantity per inch
- 20
- Material
- Overall Steel
- Nut height
- 0.720 in (nominal)
- Thread direction
- Right-Hand
- Smallest inside diameter
- 0.300–0.305 in
- Width across flats
- 0.562 in (nominal)
- Thread class
- 3B
- Nominal tube outside diameter
- Inches 0.250
- Seat angle
- 45.00 ° (nominal)
- Length to shoulder
- 0.537–0.557 in
- Thread series
- UNF
- Nominal thread size
- Inches 0.438
From the federal catalog's item characteristics for this NSN. Confirm critical dimensions against your part or drawing before ordering.
Cross-reference part numbers
MS21921-4 4730-554-8015 AP2109T04 AP2109T4
Also referenced as
MS21921D4
Older, superseded, advisory or drawing numbers the federal catalog associates with this NSN — the ones in an old manual. They find the item; confirm the current part number when you order.
Shown for identification only. SECO can quote against any of these numbers.
Logistics data
| Source of supply | SMS DLA Land and Maritime, Columbus, Ohio |
| Acquisition advice code | Y Terminal item (stock exhausted) — a terminal item: government stock is exhausted and it is not being re-procured. SECO has 12 on the shelf |
| Unit of issue | EA each |
| Demilitarization code | A Demilitarization not required — non-munitions-list item |
| Controlled inventory code | U Unclassified |
| Hazardous material indicator | N No hazardous material |
Source: public FLIS/PUB LOG cataloging data.
Why buy from SECO
These quantities sit on our own shelves — we are a stocking supplier, not a broker sourcing after you order. Condition-coded stock, formal quotes with NSN/PN on the paperwork, POs and GPC welcome, fast U.S. shipping.
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FAQ
What is NSN 4730-00-554-8015?
NSN 4730-00-554-8015 (4730005548015) — Tube Coupling Nut: SECO Parts has 12 in stock in Augusta, GA, on our own shelf. It is the NATO Stock Number for tube coupling nut in federal supply class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings).
Is NSN 4730-00-554-8015 available?
SECO Parts has 12 in stock in Augusta, GA — order or request a quote below.
How much does NSN 4730-00-554-8015 cost?
NSN 4730-00-554-8015 is a low-cost part, so SECO quotes it by the line rather than by the piece: there is a $50 minimum per line, and quantity pricing on request — usually answered the same business day.
What does NSN 4730-00-554-8015 fit?
The federal catalog lists NSN 4730-00-554-8015 as used on: Medium Self-Propelled Howitzer (2350-01-031-0586).
What part numbers cross-reference to NSN 4730-00-554-8015?
Part numbers that cross-reference this NSN include MS21921-4, 4730-554-8015, AP2109T04, AP2109T4. It is also referenced by older, superseded or advisory numbers: MS21921D4. SECO can quote against any of them.
Same item, other stock numbers
Other NSNs the federal catalog names NUT,TUBE COUPLING. Same name is not the same part: check the part numbers.