021-001-179-1

View detailed technical data, stock status, and sourcing information for: 021-001-179-1
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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

4730-01-319-9909

Item Name Code

19964

Assigment Date

05/17/1990 (36 years ago)

A washer, round in shape, and having a centrally located hole. One bearing surface is flat and unbroken, the other surface is in the form of a raised shoulder (boss) having a flat bearing surface. The thickness of the shoulder (boss) must not exceed 25 percent of the shoulder (boss) diameter. For items having a shoulder (boss) of greater thickness, use bearing, sleeve; bushing sleeve; or spacer, sleeve. Excludes:insulator, washer and thrust type washers.

hexagon nut style, 3b thread class, 0.124 inches nominal shoulder width, right-hand thread direction, 0.750 inches nominal nut height

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
Shoulder Width: 0.124 inches nominal
Nut Style: hexagon
Nut Height: 0.750 inches nominal
Width Across Flats: 1.188 inches nominal
Smallest Inside Diameter: 0.687 inches nominal
Thread Series: un
Shoulder Step Width: 0.188 inches nominal
Thread Quantity Per Inch: 14
Nominal Thread Size: 1.000 inches
Material: steel comp 303 overall
Material Document And Classification: qq-s-763 fed spec single material 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
021-001-179	Union Nut
021-001-179-1	Union Nut

FAQs

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

What is the FSCG of the NSN 4730-01-319-9909?

The FSCG of the NSN 4730-01-319-9909 is 4730

Does the NSN 4730-01-319-9909 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 4730-01-319-9909 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 4730-01-319-9909 contain precious materials?

Item does not contain precious metal.

Does NSN 4730-01-319-9909 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 4730-01-319-9909 was assigned to the Federal Catalog?

It was assigned 36 years ago, on Thu, May 17, 1990