4730-00-871-6721

Find complete technical information, availability, and procurement data for: 4730-00-871-6721
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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

4730-00-871-6721

Item Name Code

18681

Assigment Date

11/08/1967 (58 years ago)

A fluid line fitting having a pipe, tube or hose connection or a through hole to accommodate a bolt, fluid passage on one end. The other end must have an internal or external quick disconnect feature for connecting a mating part to form a quick disconnect coupling assembly. The fitting may incorporate a self-sealing feature for the purpose of automatically shutting off the flow of fluid when disconnected from its mating half. For self-sealing fittings with an external or internal threaded disconnect end, see coupling half, self-sealing. See also, connector, multiple, fluid pressure line.

1.281 inches nominal leg length, 2.626 inches minimum and 2.706 inches maximum overall length, 3a all ends thread class, push-pull all ends quick disconnect method, flared all ends 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: 3a all ends
Overall Length: 2.626 inches minimum and 2.706 inches maximum
Quick Disconnect Method: push-pull all ends
Connection Style: flared all ends
Leg Length: 1.281 inches nominal
Connection Type: external quick disconnect all ends
Connection Type: threaded external tube first fluid end connection
Features Provided: self-sealing
Nominal Thread Size: 0.750 inches all ends
Seat Angle: 37.0 degrees
Nominal Outside Diameter Tube Accommodated: 0.500 inches all ends
Material: steel body
Material Document And Classification: ams 5643 assn std single material response body
Surface Treatment: passivate body
Style Designator: male coupling half
Thread Series Designator: unf all ends

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
390253-8	Quick Disconnect Coupling Half

FAQs

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

What is the FSCG of the NSN 4730-00-871-6721?

The FSCG of the NSN 4730-00-871-6721 is 4730

Does the NSN 4730-00-871-6721 have a Schedule B code assigned?

Yes, the Schedule B code is 7307199030

Does NSN 4730-00-871-6721 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 4730-00-871-6721 contain precious materials?

Precious metal content is unknown

Does NSN 4730-00-871-6721 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 4730-00-871-6721 was assigned to the Federal Catalog?

It was assigned 58 years ago, on Wed, Nov 8, 1967