4730-00-140-3667

Find complete technical information, availability, and procurement data for: 4730-00-140-3667
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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

4730-00-140-3667

Item Name Code

18681

Assigment Date

09/10/1971 (54 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.

internal quick disconnect all ends connection type, twist-lock all ends quick disconnect method, 0.550 inches nominal leg length, flared all ends connection style, 3a all ends thread class

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
Quick Disconnect Method: twist-lock all ends
Connection Style: flared all ends
Leg Length: 0.550 inches nominal
Connection Type: internal quick disconnect all ends
Connection Type: threaded external tube first fluid end connection
Features Provided: self-sealing
Nominal Thread Size: 0.438 inches all ends
Seat Angle: 37.0 degrees
Nominal Outside Diameter Tube Accommodated: 0.250 inches all ends
Material: aluminum alloy body
Material Document And Classification: qq-a-325 fed spec single material response body
Surface Treatment: anodize body
Surface Treatment Document And Classification: mil-a-8625 mil spec single treatment response 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
155-S12-4D	Quick Disconnect Coupling Half
C4539-4D	Quick Disconnect Coupling Half

FAQs

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

What is the FSCG of the NSN 4730-00-140-3667?

The FSCG of the NSN 4730-00-140-3667 is 4730

Does the NSN 4730-00-140-3667 have a Schedule B code assigned?

Yes, the Schedule B code is 7609000000

Does NSN 4730-00-140-3667 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 4730-00-140-3667 contain precious materials?

Precious metal content is unknown

Does NSN 4730-00-140-3667 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 4730-00-140-3667 was assigned to the Federal Catalog?

It was assigned 54 years ago, on Fri, Sep 10, 1971