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Datasheet. AS21921 specification
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.
2b
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
The process used in manufacturing the item.
forged
The style designation indicating the configuration that most nearly corresponds to the appearance of the nut.
tube coupling
0.760in. ⁓49/64"
The national stock number or the identification information of the end equipment for which the item is a part.
16n aircraft, viking S-3A
The shortest straight line between flats,perpendicular to the height.
0.625in. ⁓5/8"
0.615in.
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.
0.362in.
A designation indicating the diameter-pitch combination and the number of threads per measurement scale applied to a series of diameters.
unf
The number of threads on the item per linear inch measured on a line parallel to the thread axis.
20
A designation that is used for the purpose of general identification of the thread.
0.500in. ⁓1/2"
The nominal length of a straight line which passes through the center of a tube,and terminates at the outside circumference.
0.312in.
45.00 degrees
The chemical compound or mechanical mixture properties of which the item is fabricated.
aluminum alloy
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.
anodize
The specification,standard,or manufacturers reference,and the classification designation,such as type,class,grade,and the like,that identifies the surface treatment material.
MIL-A-8625, type 2, class 2 mil spec single treatment response
The document designator of the specification or standard which established the item of supply.
96906-MS21921 government standard
Answers.
1EA
Aluminum alloy
20
Right-hand
2b
Schedule B number: 7609000000
nmfc 013540
Aluminum tube or pipe fittings (couplings,elbows sleeves)
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 4730-00-483-4755 NUT,TUBE COUPLING
Used on 16n aircraft, viking s-3a. anodize surface treated 20 thread quantity per inch right-hand 2b thread class
- NIIN
- 004834755
- NIIN Date
- 06/18/74
- Schedule B
- 7609000000
- Name Code
- 03859
- FIIG
- A021A0
- Item Weight
- 0.000lbs
- Item Dimensions
- --
- QUP
- 1
- Historical Price
- $25.28 EA
- DEMIL / ITAR
- Uncontrolled item (Code A)
- Hazmat
- No hazard information available from HMIRS.
- MSDS
- N/A
- Precious Metals
- Metal content unknown
- 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. | MS21921-5W | Cage 81343 |
| 3. | MIL-F-18280 | Cage 81349 |
| 4. | MS21921-5W | Cage 96906 |
| 5. | B52192145W | Cage 98985 |
Major End Users Countries and entities
- - Department of The Navy
- - Department of The Air Force
- - Brazil
- - Israel
- - Canada
- - Greece
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- 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)
- 013540 ALUM NUTS
- UFC (universal freight code)
- 05680
Similar by Design Other nuts with similar characteristics
Nothing similar to this part number was found in our inventory
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.
