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Datasheet. MS21902K20 specification
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.
3a all ends
The style designation indicating the configuration that most nearly corresponds to the appearance of the connection.
external seat for gasket seal (boss) all ends
Indicates the type of connection/s/.
threaded external boss all ends
The number of threads on the item per linear inch measured on a line parallel to the thread axis.
12 all ends
A designation that is used for the purpose of general identification of the thread.
1.625in. all ends ⁓1-5/8"
The nominal dimension measured along the longitudinal axis with terminated points at the extreme ends of the item.
1.750in.
The chemical compound or mechanical mixture properties of which the item is fabricated.
steel comp 316 or steel comp 304
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the material.
QQ-S-763 fed spec single material response
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
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-S-5002 mil spec 1st treatment response and QQ-P-35, ty 1 fed spec 2nd treatment response
The style designation indicating the configuration that most nearly corresponds to the appearance of the item.
flareless (tube)
A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.
unj all ends
Answers.
Unj all ends
Flareless (tube)
Steel comp 316 or steel comp 304
12 all ends
3a all ends
Schedule B number: 7307994000
Other fittings nesoi of alloy steel not stainless
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 4730-01-316-6345 NIPPLE,BOSS
unj all ends thread series flareless (tube) passivate surface treated 12 all ends thread quantity per inch 3a all ends thread class
- NIIN
- 013166345
- NIIN Date
- 03/13/90
- Schedule B
- 7307994000
- Name Code
- 26952
- FIIG
- A080B0
- 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
Major End Users Countries and entities
- - Canada
- - France
- - Italy
- - Denmark
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MS21902K20 / Nipple,bossWhat is the formal definition of this item?
A straight, one-piece fitting used to join two bosses or boss fittings. both ends are the same size and have external machine threads (straignt threads other than pipe or hose series). it is designed to facilitate a gasket, preformed packing, washer, or the like to form a seal at the boss. the center section may be suitably shaped to accommodate a wrench.
