A4757

A4757 Tube Fitting Threaded Plug

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Datasheet. A4757 specification

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

2a external

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 external

Head Height
A measurement from the bottom to the top of the head,in distinction from depth.

0.312in. ⁓5/16"

Overall Length
The dimension measured along the longitudinal axis with terminated points at the extreme ends of the item.

1.312in. ⁓1-5/16"

Connection Style
The style designation indicating the configuration that most nearly corresponds to the appearance of the connection.

plain

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

14 external

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

1.063in. external ⁓1-5/64"

Seat Angle
The angle of the end surface upon which the mated surface seats.

45.0 degrees

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

copper alloy

Style Designator
The style designation indicating the configuration that most nearly corresponds to the appearance of the item.

plug, tube fitting flared (note: drilled hole is optional should not be considered as a separating characteristic

Thread Series Designator
A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.

unf external

Answers.

What class is the thread series?

Unf external

What is the style?

Plug, tube fitting flared (note: drilled hole is optional should not be considered as a separating characteristic

What material is the tube fitting threaded plug made of ?

Copper alloy

What is the thread quantity per inch?

14 external

What is the thread direction?

Right-hand external

What is the thread class?

2a external

What is the NSN for A4757?

4730-00-905-8700

What's the federal classification of A4757?

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 4730-00-905-8700 PLUG,TUBE FITTING,THREADED

unf external thread series plug, tube fitting flared (note: drilled hole is optional should not be considered as a separating characteristic 14 external thread quantity per inch 1.312" overall length right-hand external 2a external thread class

NIIN
009058700
NIIN Date
01/01/60
Schedule B
 
Name Code
28613
FIIG
A208A0
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

  • - National Aeronautics And Space Administration 

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A4757 / Plug,tube fitting,threadedWhat is the formal definition of this item?

A tube fitting with external threads other than pipe or hose series having an internal or external seating surface. the seating surface is designed to form a seal when mated with other tube fittings to retain fluids under pressure during equipment operation. for items without a specific seating surface which are designed to utilize a gasket or packing under the head for forming a seal, see plug, machine thread.