31901L9

31901L9 Tube Reducer
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Datasheet. 31901L9 specification

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

3a 2nd end

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

3a 1st end

Reducer Type
Refers to the location of the ends whether on the same centerline (concentric) or on different centerlines (eccentric).

concentric

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

flared (tube) 1st end

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

flared (tube) 2nd end

Connection Type
Indicates the type of connection/s/.

threaded external tube 1st end

Connection Type
Indicates the type of connection/s/.

threaded external tube 2nd end

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

0.750in. 2nd end ⁓2-1/64"

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

0.875in. 1st end ⁓1/64"

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

37.0 degrees 1st end

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

37.0 degrees 2nd end

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

0.500in. 2nd end

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

0.625in. 1st end

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

1.800in.

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

steel corrosion resisting

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 1st end

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 2nd end

Answers.

What quantity is this sold in?

1EA

What class is the thread series?

Unf 2nd end

What class is the thread series?

Unf 1st end

What material is the tube reducer made of ?

Steel corrosion resisting

What is the thread class?

3a 1st end

What is the thread class?

3a 2nd end

What is the NSN for 31901L9?

4730-00-927-1203

How is this classified for shipping?

Schedule B number: 7307290000
nmfc 052190
Stainless steel tube or pipe fittings nesoi

What's the federal classification of 31901L9?

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 4730-00-927-1203 REDUCER,TUBE

unf 2nd end thread series 3a 1st end thread class

NIIN
009271203
NIIN Date
04/24/68
Schedule B
7307290000 
Name Code
08506
FIIG
A080B0
Item Weight
0.200lbs
Item Dimensions
40 X 40 X 20
QUP
1 
Historical Price
$61.38 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. 619E223P9 Cage 07482
2. 619E223 Cage 07482
3. 619E223P9 Cage 14798

Major End Users Countries and entities

  • - Department of The Air Force 
  • - Department of The Navy 
  • - Poland 
  • - Spain 
  • - Australia 
  • - France 
  • - Germany 
  • - Republic of Korea 
  • - Italy 
  • - Turkey 

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Shipping Information

Special Handling
Other or no special handling required (sh) 
LTL (less than a truck load rating)
Rating variable 
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)
052190 PIPE,TUBING,OR PIPE OR TUBING FITTI 
UFC (universal freight code)
30000 

Similar by Design Other reducers with similar characteristics

Nothing similar to this part number was found in our inventory

31901L9 / Reducer,tubeWhat is the formal definition of this item?

A straight tube fitting having a different size connection on each end. it is designed to join two tubes of different sizes. excludes bushing (as modified).