4730-01-257-8399

Find complete technical information, availability, and procurement data for: 4730-01-257-8399
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Federal Supply Group

Pipe, Tubing, Hose, and Fittings

Federal Supply Classification

4730 Hose, Pipe, Tube, Lubrication and Railing Fittings

National Stock Number

4730-01-257-8399

Item Name Code

03776

Assigment Date

06/25/1987 (39 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.

3a 1st end thread class, 1.500 inches 2nd end nominal pipe size accommodated, plain (pipe) 2nd end connection style, threaded external pipe 2nd end connection type, flared (tube) 1st 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.

Nominal Pipe Size Accommodated: 1.500 inches 2nd end
Thread Class: 3a 1st end
Connection Style: flared (tube) 1st end
Connection Style: plain (pipe) 2nd end
Connection Type: threaded external pipe 2nd end
Connection Type: threaded external tube 1st end
Nominal Thread Size: 1.500 inches 1st end
Nominal Thread Size: 1.750 inches 2nd end
Seat Angle: 37.0 degrees 1st end
Criticality Code Justification: feat
Nominal Outside Diameter Tube Accommodated: 1.750 inches 1st end
Nominal Overall Length: 2.844 inches
Special Features: kc116c28-24; hexagon wrenching flats
Material: steel comp 316 overall
Material Document And Classification: qq-s-763,cond a fed spec single material response overall
Surface Treatment: passivate outside
Thread Series Designator: anpt 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
AS4309K2824	Pipe to Tube Straight Adapter
KC116C28-24	Pipe to Tube Straight Adapter
KC116K28-24	Pipe to Tube Straight Adapter

FAQs

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

What is the FSCG of the NSN 4730-01-257-8399?

The FSCG of the NSN 4730-01-257-8399 is 4730

Does the NSN 4730-01-257-8399 have a Schedule B code assigned?

Yes, the Schedule B code is 7307994000

Does NSN 4730-01-257-8399 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 4730-01-257-8399 contain precious materials?

Precious metal content is unknown

Does NSN 4730-01-257-8399 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 4730-01-257-8399 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Thu, Jun 25, 1987