AS21921-8J

AS219218J Tube Coupling Nut

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Datasheet. AS21921-8J specification

Thread Class
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.

3b

Thread Direction
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.

RIGHT-Hand

Nut Style
The style designation indicating the configuration that most nearly corresponds to the appearance of the nut.

tube coupling

Nut Height

0.850in. and 0.870in. ⁓7/8"

Width Across Flats
The shortest straight line between flats,perpendicular to the height.

0.875in. ⁓7/8"

Length To Shoulder

0.599in. and 0.619in.

Smallest Inside Diameter
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.

0.552in. and 0.557in.

Thread Series
A designation indicating the diameter-pitch combination and the number of threads per measurement scale applied to a series of diameters.

unf

Thread Quantity Per Inch
The number of threads on the item per linear inch measured on a line parallel to the thread axis.

16

Nominal Thread Size
A designation that is used for the purpose of general identification of the thread.

0.750in. ⁓3/4"

Nominal Tube Outside Diameter
The nominal length of a straight line which passes through the center of a tube,and terminates at the outside circumference.

0.500in.

Seat Angle

45.00 degrees

Material
The chemical compound or mechanical mixture properties of which the item is fabricated.

steel comp 304

Surface Treatment
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.

passivate

Answers.

What material is the tube coupling nut made of ?

Steel comp 304

What is the thread quantity per inch?

16

What is the thread direction?

Right-hand

What is the thread class?

3b

What is the NSN for AS21921-8J?

4730-01-578-1806

What's the federal classification of AS21921-8J?

FSC 4730 ⁓ Hose, pipe, tube, lubrication, and railing fittings

Excluding air conditioning-heating fittings (fsc 4520); bituminized fiber and concrete fittings (fsc 5630); conduit boxes and fittings (fsc 5975); downspout fittings (fsc 5670); medical and surgical fittings (fsc 6515); laboratory fittings (fsc 6640); post caps and rail ends (fsc 5660); machine thread bushings and plugs (fsc 5365).

NSN 4730-01-578-1806 NUT,TUBE COUPLING

passivate surface treated 16 thread quantity per inch right-hand 3b thread class

NIIN
015781806
NIIN Date
09/29/09
Schedule B
 
Name Code
03859
FIIG
A021A0
DEMIL / ITAR
Uncontrolled item (Code A)
Hazmat
No hazard information available from HMIRS.
MSDS
N/A
Precious Metals
No precious metals
Enviromental
N/A
Electrostatic ESD & EMI
No ESD or EMI sensitivity

Major End Users Countries and entities

  • - Turkey 

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AS21921-8J / Nut,tube couplingWhat is the formal definition of this item?

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.