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Datasheet. A51H20639-1 specification
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.
2a all ends
Refers to the location of the ends whether on the same centerline (concentric) or on different centerlines (eccentric).
concentric
The national stock number or the identification information of the end equipment for which the item is a part.
10n aircraft, tomcat F-14A
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.
20 1st end
A designation that is used for the purpose of general identification of the thread.
0.437in. 2nd end ⁓2-1/64"
A designation that is used for the purpose of general identification of the thread.
0.562in. 1st end ⁓1/64"
The nominal dimension measured along the longitudinal axis with terminated points at the extreme ends of the item.
0.937in.
Those unusual or unique characteristics or qualities of an item not covered in the other requirements and which are determined to be essential for identification.
w/pressed in restrictor
The chemical compound or mechanical mixture properties of which the item is fabricated.
steel
A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.
un 1st end
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.
1EA
Unf 2nd end
Un 1st end
Steel
20 1st end
2a all ends
Schedule B number: 7307992000
nmfc 051080
Other fittings nesoi of iron or nonalloy steel
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 4730-00-531-2936 REDUCER,BOSS
Used on 10n aircraft, tomcat f-14a. unf 2nd end thread series w/pressed in restrictor 20 1st end thread quantity per inch 2a all ends thread class
- NIIN
- 005312936
- NIIN Date
- 09/11/74
- Schedule B
- 7307992000
- Name Code
- 23541
- FIIG
- A080B0
- Item Weight
- 0.100lbs
- Item Dimensions
- --
- QUP
- 1
- Historical Price
- $1,585.78 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
Major End Users Countries and entities
- - Department of The Navy
- - Turkey
Availability for A51H20639-1 A member of our team will provide you with a price and availability quote
Request a Quote »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)
- 051080 FAUCETS,BIBCOCKS,GATES VALVES
- UFC (universal freight code)
- 29300
Similar by Design Other reducers with similar characteristics
Nothing similar to this part number was found in our inventory
A51H20639-1 / Reducer,bossWhat is the formal definition of this item?
A straight fitting having a boss connection of a different size at each end. both connections have external or internal machine threads (straight threads other than pipe or hose series) and are designed to facilitate a gasket, preformed packing, washer, or the like to form a seal at the boss. excludes bushing (as modified).
