Tube Coupling Nut
MS21921-4K
(NSN) National Stock Number
4730-00-034-1411
Federal Supply Classification
4730 Hose, Pipe, Tube, Lubrication and Railing Fittings
Item Name Code
03859
Schedule B Code
7318160000
Summary
3b thread class, right-hand thread direction, tube coupling nut style, 0.531 inches nominal nut height, 0.562 inches nominal width across flats, 0.547 inches nominal length to shoulder
| DAC | HCC | DMIL | RNCC |
|---|---|---|---|
| E | - | - | 3 |
| RNVC | SADC | MSDS | RNAAC |
|---|---|---|---|
| 2 | - | - | ZZ |
Identification
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.
| INC | FIIG | Concept | Condition |
|---|---|---|---|
| 03859 | A021A0 | 1 | 1 |
Specifications
Thread Class
3b
Details
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.Thread Direction
right-hand
Details
The direction of the thread when viewed axially. a right-hand thread winds in a clockwise direction while a left-hand thread winds in a counterclockwise direction.Nut Style
tube coupling
Details
The style designation indicating the configuration that most nearly corresponds to the appearance of the nut.Nut Height
0.531 inches nominal
Details
None.Width Across Flats
0.562 inches nominal
Details
The shortest straight line between flats,perpendicular to the height.Length To Shoulder
0.547 inches nominal
Details
None.Smallest Inside Diameter
0.300 inches nominal
Details
The smallest length of a straight line which passes through the center of the two surfaces of a circular item,and terminates at the inside circumference.Thread Series
unjf
Details
A designation indicating the diameter-pitch combination and the number of threads per measurement scale applied to a series of diameters.Thread Quantity Per Inch
20
Details
The number of threads on the item per linear inch measured on a line parallel to the thread axis.Nominal Thread Size
0.438 inches
Details
A designation that is used for the purpose of general identification of the thread.Nominal Tube Outside Diameter
0.250 inches
Details
The nominal length of a straight line which passes through the center of a tube,and terminates at the outside circumference.Seat Angle
45.00 degrees nominal
Details
The angle of the end surface upon which the mated surface seats.Material
steel comp 316 overall
Details
The chemical compound or mechanical mixture properties of which the item is fabricated.Material Document And Classification
qq-s-763 fed spec single material response overall
Details
The specification, standard, or manufacturer's reference and the classification designation, such as class, condition, temper, and the like, that identifies the material.Surface Treatment
passivate overall
Details
The metallic,nonmetallic,and/or chemical properties with which the item is plated,dipped,and/or coated.the treatment is designed to protect the surface(s) and cannot be wiped off.Specification/Standard Data
96906-ms21921 government standard
Details
The document designator of the specification or standard which established the item of supply.Master-Cross Reference List
| Part | CAGE | DAC | HCC | RNCC | RNVC | MSDS | RNAAC |
|---|---|---|---|---|---|---|---|
| MS21921-4K | 01673 | 3 | - | 5 | 9 | - | AX |
| MS21921-4K | 14798 | E | - | 5 | 9 | - | AX |
| MS21921-4K | 14397 | 3 | - | 5 | 9 | - | AX |
| MS21921-4K | 03647 | 3 | - | 5 | 9 | - | AX |
| MS21921-4K | 00624 | 3 | - | 5 | 9 | - | AX |
| AS21921 | 0U583 | 5 | - | 5 | 9 | - | ZZ |
| AS21921-4K | 0U583 | 5 | - | 5 | 9 | - | ZZ |
| SAE-AS18280 | 0U583 | E | - | 3 | 1 | - | ZZ |
| AS21921 | 81343 | 5 | - | 5 | 9 | - | ZZ |
| AS21921-4K | 81343 | 5 | - | 5 | 9 | - | ZZ |
| MS21921-4K | 96906 | 3 | - | 5 | 9 | - | AX |
Material and Special Handling
Hazardous material, precious metals, criticality, and electrostatic discharge indicators.
| HMIC | PMIC | ESD/EMI | Criticality |
|---|---|---|---|
| N | U | - | - |
Freight
Universal / National Freight and Handling Information
| UFC | HMC | LTL | LCL |
|---|---|---|---|
| 48950 | - | W | - |
| RVC | WCC | TCC | SHC |
|---|---|---|---|
| - | 573 | Z | 9 |
Certified Supplier
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Manufacturer
FAQs
Frequently asked questions for NSN 4730-00-034-1411
What is the NIIN of the NSN 4730-00-034-1411?
The National Item Identification Number (NIIN) of the NSN 4730-00-034-1411 is 00-034-1411
When the NSN 4730-00-034-1411 was assigned to the Federal Catalog?
It was assigned 57 years ago, on Tue, May 9, 1967
Does the NSN 4730-00-034-1411 contain any precious metals?
Type/content is unknown
Does the NSN 4730-00-034-1411 contain any hazardous material?
No data in HMIRS
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