4730-00-155-7656

Find complete technical information, availability, and procurement data for: 4730-00-155-7656

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4730-00-155-7656
Federal Supply Group
Pipe, Tubing, Hose, and Fittings
National Stock Number
4730-00-155-7656
Item Name Code
22675
Assigment Date
01/17/1973 (53 years ago)

An adapter having machine threads (straight threads other than pipe or hose series) designed to accommodate a tube on one end or an unthreaded end designed to accommodate a tube. The other end has external or internal machine threads (straight threads other than pipe or hose series) and is designed to facilitate a gasket, preformed packing, washer, or the like to form a seal at the boss. It is designed to join a tube or tube fitting to a boss or boss fitting in a straight line on items such as tanks, housings, valve fittings, and the like. See also coupling, tube and nipple, tube.

swivel nut, flare (tube) style 3 optional end 1st end connection style, 2b 1st end thread class, threaded internal boss 2nd end connection type, 2b 2nd end thread class, gasket seal (boss) 2nd end connection style

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Thread Class
2b 1st end
Thread Class
2b 2nd end
Connection Style
swivel nut, flare (tube) style 3 optional end 1st end
Connection Style
gasket seal (boss) 2nd end
Connection Type
threaded internal boss 2nd end
Connection Type
threaded internal tube 1st end
Thread Quantity Per Inch
20 2nd end
Nominal Thread Size
0.687 inches 2nd end
Nominal Thread Size
0.750 inches 1st end
Seat Angle
37.0 degrees 1st end
Nominal Outside Diameter Tube Accommodated
0.500 inches 1st end
Nominal Overall Length
1.667 inches
Material
steel overall
Thread Series Designator
un 2nd end
Thread Series Designator
unf 1st end

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number Name
GF503DG8 Tube to Boss Straight Adapter
R44238P8 Tube to Boss Straight Adapter

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 4730-00-155-7656?
The FSCG of the NSN 4730-00-155-7656 is 4730
Does the NSN 4730-00-155-7656 have a Schedule B code assigned?
Yes, the Schedule B code is 7307992000
Does NSN 4730-00-155-7656 require demilitarization?
Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.
Does NSN 4730-00-155-7656 contain precious materials?
Precious metal content is unknown
Does NSN 4730-00-155-7656 contain hazardous materials?
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
When the NSN 4730-00-155-7656 was assigned to the Federal Catalog?
It was assigned 53 years ago, on Wed, Jan 17, 1973

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