Tube Coupling Nut

MS21921-12W

MS21921-12W
(NSN) National Stock Number
4730-00-191-6850
Federal Supply Classification
4730 Hose, Pipe, Tube, Lubrication and Railing Fittings
Item Name Code
03859
Schedule B Code
7609000000
Summary

3b thread class, right-hand thread direction, machined fabrication method, tube coupling nut style, 1.000 inches nominal nut height, 1.250 inches nominal width across flats

DAC HCC DMIL RNCC
3 - - 5
RNVC SADC MSDS RNAAC
1 - - AX
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.
Fabrication Method
machined
Details The process used in manufacturing the item.
Nut Style
tube coupling
Details The style designation indicating the configuration that most nearly corresponds to the appearance of the nut.
Nut Height
1.000 inches nominal
Details None.
Width Across Flats
1.250 inches nominal
Details The shortest straight line between flats,perpendicular to the height.
Length To Shoulder
0.687 inches nominal
Details None.
Smallest Inside Diameter
0.826 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
unj
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
12
Details The number of threads on the item per linear inch measured on a line parallel to the thread axis.
Nominal Thread Size
1.062 inches
Details A designation that is used for the purpose of general identification of the thread.
Nominal Tube Outside Diameter
0.750 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
0.45 degrees nominal
Details The angle of the end surface upon which the mated surface seats.
Material
aluminum alloy 2024 or aluminum alloy 7075 overall
Details The chemical compound or mechanical mixture properties of which the item is fabricated.
Material Document And Classification
qq-a-225/9 fed spec 1st material response or qq-a-225/6 fed spec 2nd 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
anodize 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
MS21921-12W 30974 3 - 5 1 - AX
MS21921-12W 14798 3 - 5 9 - AX
MS21921-12W 14397 3 - 5 9 - AX
MS21921-12W 50808 3 - 5 9 - AX
AS18280 0U583 E - 5 9 - ZZ
AS21921 0U583 E - 5 9 - ZZ
MS21921-12W 0U583 E - 3 2 - ZZ
SAE-AS18280 0U583 E - 3 1 - ZZ
AS18280 81343 E - 5 9 - ZZ
AS21921 81343 E - 5 9 - ZZ
MS21921 81343 E - 5 9 - ZZ
MS21921-12W 81343 E - 5 9 - ZZ
MS21921-12W 50948 3 - 5 9 - AX
MILF18280 81349 3 - 5 9 - AX
MS21921-12W 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
05680 - Q -
RVC WCC TCC SHC
- 576 Z 9

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Manufacturer
EATON AEROQUIP LLC DBA AEROSPACE GROUP DIV FLUID AND ELECTRICAL DISTRIBUTION
CAGE: 00624
JACKSON , MI , 49203-1973
UNITED STATES
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FAQs
Frequently asked questions for NSN 4730-00-191-6850
What is the NIIN of the NSN 4730-00-191-6850?
The National Item Identification Number (NIIN) of the NSN 4730-00-191-6850 is 00-191-6850
When the NSN 4730-00-191-6850 was assigned to the Federal Catalog?
It was assigned 54 years ago, on Wed, Mar 11, 1970
Does the NSN 4730-00-191-6850 contain any precious metals?
Type/content is unknown
Does the NSN 4730-00-191-6850 contain any hazardous material?
No data in HMIRS

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