4730-00-052-7673

Find complete technical information, availability, and procurement data for: 4730-00-052-7673

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4730-00-052-7673
Federal Supply Group
Pipe, Tubing, Hose, and Fittings
National Stock Number
4730-00-052-7673
Item Name Code
17645
Assigment Date
01/01/1963 (63 years ago)

An item with internal machine threads designed to fit the external machine threads of a tube fitting. It has flat faces, one of which has a counterbored recess to accommodate packing, packing or sealing ring(s), gasket(s), and the like. The item, when installed, provides a method of locking and sealing the connection. See also locknut, pipe; nut (1), tube coupling and nut (1), plain, hexagon.

0.688 inches nominal width across flats, right-hand thread direction, 3b thread class, un thread series, mrap - common nsn - used on 3 mrap variants and 38 other weapon systems including z9n - aircraft, fa-18, a - d, e/f, g (growler); high-mobility artillery rocket system (himars) end item identification

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Thread Class
3b
Thread Direction
right-hand
End Item Identification
mrap - common nsn - used on 3 mrap variants and 38 other weapon systems including z9n - aircraft, fa-18, a - d, e/f, g (growler); high-mobility artillery rocket system (himars)
Width Across Flats
0.688 inches nominal
Thread Series
un
Thread Quantity Per Inch
20
Nominal Thread Size
0.438 inches
Nominal Tube Outside Diameter
0.250 inches
Material
steel overall
Surface Treatment
cadmium overall

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN Name Date
5310-00-866-2421 No Name Available 01/01/1960
5365-01-378-2881 No Name Available 08/01/2000

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
4-070118C Tube Fitting Locknut
5924X4 Tube Fitting Locknut
C5924X4 Tube Fitting Locknut
C7924X4 Tube Fitting Locknut
GS1523 Tube Fitting Locknut
SAE J514 4 070118C Tube Fitting Locknut

FAQs

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

What is the FSCG of the NSN 4730-00-052-7673?
The FSCG of the NSN 4730-00-052-7673 is 4730
Does the NSN 4730-00-052-7673 have a Schedule B code assigned?
Yes, the Schedule B code is 8710000090
Does NSN 4730-00-052-7673 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 4730-00-052-7673 contain precious materials?
Precious metal content is unknown
Does NSN 4730-00-052-7673 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 4730-00-052-7673 was assigned to the Federal Catalog?
It was assigned 63 years ago, on Tue, Jan 1, 1963

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