SAE AS21921

SAEAS21921 Tube Coupling Nut
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Datasheet. SAE AS21921 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

Fabrication Method
The process used in manufacturing the item.

any acceptable

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

tube coupling

Nut Height

0.520in. and 0.540in. ⁓35/64"

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

0.375in. ⁓3/8"

Length To Shoulder

0.415in. and 0.435in.

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.

0.171in. and 0.176in.

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

unf

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.

0.125in.

Seat Angle

45.0 degrees

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

steel comp 347

Answers.

What quantity is this sold in?

1EA

What material is the tube coupling nut made of ?

Steel comp 347

What is the thread direction?

Right-hand

What is the thread class?

3b

What is the NSN for SAE AS21921?

4730-00-825-2095

How is this classified for shipping?

Schedule B number: 7318160000
nmfc 093470
Nuts of iron or steel

What's the federal classification of SAE AS21921?

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 4730-00-825-2095 NUT,TUBE COUPLING

right-hand 3b thread class

NIIN
008252095
NIIN Date
08/20/81
Schedule B
7318160000 
Name Code
03859
FIIG
A021A0
Item Weight
0.100lbs
Item Dimensions
--
QUP
1 
Historical Price
$12.20 EA
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

Other Part Numbers Parts with same form, fit, and function by other manufacturers

1. AS18280 Cage 81343
2. AS21921-2R Cage 81343
3. MS21921-2S Cage 96906
4. AS21921-2S Cage 81343

Major End Users Countries and entities

  • - National Aeronautics And Space Administration 
  • - Department of The Air Force 
  • - Poland 
  • - Israel 
  • - Greece 

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Shipping Information

Special Handling
Other or no special handling required (sh) 
LTL (less than a truck load rating)
70.0 
LCL (less than a car load rating)
Unknown
Special Cargo
No special type of cargo code applicable 
Air Freight (Minimum cargo door size required)
Shipment is not a consolidation and does not exceed 84 inches in any dimension. 
Customs Requirement Classification
Construction materials: includes paint and related materials, prefabricated building, wood products, metal and composition mater 
Commodity (for shipments via water)
Metal and metal products, nos, (less than 35 feet) 
NMFC (national motor freight code)
093470 BOLTS/NUTS I/S 
UFC (universal freight code)
48940 

Similar by Design Other nuts with similar characteristics

Nothing similar to this part number was found in our inventory

SAE AS21921 / 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.