4730-01-321-9921

Find complete technical information, availability, and procurement data for: 4730-01-321-9921
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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

4730-01-321-9921

Item Name Code

03776

Assigment Date

06/27/1990 (36 years ago)

A straight pipe fitting designed to join two lengths of pipe or pipe fittings in such a manner that they may be disconnected without disturbing the rest of the pipe line. The end connections have pipe threads or are unthreaded and designed to accommodate a pipe.

flared (tube) 1st end connection style, 2a 1st end thread class, threaded external tube 1st end connection type, threaded external pipe 2nd end connection type, plain (pipe) 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: 2a 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: 0.375 inches 2nd end
Nominal Thread Size: 0.437 inches 1st end
Seat Angle: 37.0 degrees 1st end
Nominal Outside Diameter Tube Accommodated: 0.250 inches 1st end
Nominal Overall Length: 1.422 inches
Material: steel corrosion resisting overall
Thread Series Designator: nptf 2nd end
Thread Series Designator: unf 1st end
Furnished Items And Quantity: 1 short coupling nut
Specification/Standard Data: 96906-ms51500 government standard and 81343-j514 professional/industrial association standard
Nondefinitive Spec/Std Data: 2a figure

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
10553095-2	Pipe to Tube Straight Adapter
2021-6-4C	Pipe to Tube Straight Adapter
259-2021-4-6	Pipe to Tube Straight Adapter
4-6FBTX-SS	Pipe to Tube Straight Adapter
4-6FTX-SS	Pipe to Tube Straight Adapter
MS51500A4-6S	Pipe to Tube Straight Adapter
MS51500B4-6S	Pipe to Tube Straight Adapter

FAQs

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

What is the FSCG of the NSN 4730-01-321-9921?

The FSCG of the NSN 4730-01-321-9921 is 4730

Does the NSN 4730-01-321-9921 have a Schedule B code assigned?

Yes, the Schedule B code is 7307290000

Does NSN 4730-01-321-9921 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 4730-01-321-9921 contain precious materials?

Item does not contain precious metal.

Does NSN 4730-01-321-9921 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 4730-01-321-9921 was assigned to the Federal Catalog?

It was assigned 36 years ago, on Wed, Jun 27, 1990