4730-00-678-9457

Find complete technical information, availability, and procurement data for: 4730-00-678-9457
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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

4730-00-678-9457

Item Name Code

17645

Assigment Date

01/01/1963 (63 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.

un thread series, 1.250 inches nominal width across flats, tube fitting locknut nut style, right-hand thread direction, 2b 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: 2b
Thread Direction: right-hand
Nut Style: tube fitting locknut
Width Across Flats: 1.250 inches nominal
Thread Series: un
Packing Recess Diameter: 0.183 inches nominal
Packing Recess Depth: 0.166 inches nominal
Thread Quantity Per Inch: 12
Nominal Thread Size: 1.062 inches
Nominal Tube Outside Diameter: 0.750 inches
Material: steel overall
Material Document And Classification: 66,aisi 12l14 fed std single material response overall
Surface Treatment: cadmium overall
Surface Treatment Document And Classification: qq-p-416,ty2,cl6 fed spec single treatment response overall

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
12L5NS	Tube Fitting Locknut

FAQs

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

What is the FSCG of the NSN 4730-00-678-9457?

The FSCG of the NSN 4730-00-678-9457 is 4730

Does NSN 4730-00-678-9457 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 4730-00-678-9457 contain precious materials?

Item does not contain precious metal.

Does NSN 4730-00-678-9457 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 4730-00-678-9457 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963