Tube Coupling Nut

NSN: 4730-00-554-7397 | Model: MS21921D6

An internally threaded nut which has either an internal seat or shoulder and/or is designed to be used with a ferrule, to mate with the seat of an externally threaded tube fitting to form a leakproof connection. Excludes nut (1), tube coupling, reducing; and nut (1), union.

NSN Properties and Flags

NATO Stock Number

4730-00-554-7397

DEMIL

Thread Class

Thread Direction

Right-hand

Fabrication Method

Machined

Nut Style

Tube coupling

Nut Height

0.800 inches

End Application

Aircraft application

Width Across Flats

0.688 inches

Length To Shoulder

0.578 inches

Smallest Inside Diameter

0.425 inches

Thread Series

Unf

Thready Qty Per Inch (tpi)

Thread Size

0.562 inches

Tube Outside Diameter

0.375 inches

Seat Angle

45.00 degrees

Material

Aluminum alloy 7075

Material Specification

Qq-a-225/6, t6 federal specification single material response

Surface Treatment

Anodize

Specification Data

81343-as21921 professional/industrial association specification

Recent Solicitations

Solicitation	Return by Date	Buyer Code	Quantity
SPE7M318T5696	2018-03-29	C0138	2983 EA

Inventory Check

The last inventory check on this NSN was done on 02/14/2024. Due to rapid changes in inventory this may not be the current stock qty.

New Surplus: 1388
New: 4996
As Removed: 1
Overhauled: 1
Serviceable: 1

Pricing and Availability

Send us a request for quote using the form below. Our team will contact you with an up to date pricing and availability quote ASAP.

Certified Quality Assurance

ISO 9001:2015 + AS9120B
Counterfeit Parts Prevention
100% Product Inspections
7 Year Record Retention
On Time Delivery
HAZMAT Certified
Worldwide Shipping

NSN 4730-00-554-7397 Datasheet

Supply Class (FSC):

Railing Fittings Lubrication Tube Pipe Hose

Cross Reference:

MS21921D6
AS21921
AS18280
VSF1212-6WW
156/1
MS21921-6W
MS21921-6D
MS21921-6D
MS21921-6D
MS21921-6D
MS21921-6D
MS21921-6D
MS21921-6D
MS21921W6
MS21921-6W

Cage Codes:

Military Standards (CAGE 96906)
Society Of Automotive Engineers Inc (CAGE 81343)
Alcoa Global Fasteners, Inc. (CAGE 92215)
Atmosphere Control International (CAGE K7739)
Aeroquip Llc. Eaton (CAGE 00624)
Hannifin Corporation Parker (CAGE 45681)
Parker Hannifin Corp (CAGE 50948)
Globe Aerospace Inc (CAGE 03647)
Dana Corp (CAGE 79470)
Aeroquip Inc Eaton (CAGE 01276)

Replacements:

4730-00-554-7397 replaces 4730-00-969-6731
4730-00-554-7397 replaces 4730-00-491-9564

Schedule B & Trade:

Schedule B: 7609000000 (NAICS 332919)

Aluminum tube or pipe fittings (couplings, elbows sleeves)
SITC: 68427

Aluminum and aluminum alloy tube and pipe fittings (e.G. Couplings, elbows and sleeves)
End Use: 12300

Finished metal shapes

Identification:

HMIC

N - Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

PMIC

U - Precious metal content is unknown

CRITL

- The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.

Freight Information:

NMFC:

013540 - Alum nuts
WCC:

576 - Metal and metal products, nos, (less than 35 feet)
SHC:

9 - Other or no special handling required (sh)
ADC:

A - Shipment is not a consolidation and does not exceed 84 inches in any dimension.
ACC:

B - Construction materials: includes paint and related materials, prefabricated building, wood products, metal and composition mater
LTL:

Q - 70.0
TCC:

Z - No special type of cargo code applicable

NSN Management Codes:

SOS
Sms
AAC
D
Quantity per pack
100
Unit of Measure
Ea
Shelf Life
N/A
Classification Control
U
MGMT_CTL
J22bxx-
Repariability
This is a nonreparable item. if condemned or economically unserviceable, then dispose at the level authorized replace the item.

Questions & Answers:
What are the historical prices recorded for this stock number?
Historical data shows pricing from $3.12 to $5.20..
Does NSN 4730-00-554-7397 have a shelf life?
No. There is no shelf life applicable for this NSN.
What NATO entities are users of this NSN?
Department Of The Army, Department Of The Air Force, U.s. Marine Corps, Department Of The Navy, National Aeronautics and Space Administration, Brazil, Spain, Columbia, Israel, Singapore, Kuwait, Saudi Arabia, Malaysia, Australia, Belgium, Canada, New Zealand, France, Germany, Republic Of Korea, United Kingdom, Netherlands, Portugal, Italy, Denmark, Norway, Greece, and Turkey
What is the NIIN of NSN 4730-00-554-7397?
005547397 or 00-554-7397
Does NSN 4730-00-554-7397 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 4730-00-554-7397?
Solicitation SPE7M318T5696 for qty 2983 on 03/19/2018
When was this national stock number assigned to the federal catalog?
Jan 01, 1961