5340-01-429-2431

Find complete technical information, availability, and procurement data for: 5340-01-429-2431
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5340 Commercial Hardware

National Stock Number

5340-01-429-2431

Item Name Code

40280

Assigment Date

04/06/1996 (30 years ago)

A washer or cone or disk shape with a centrally located hole, designed to accommodate a flat or oval head screw and provide additional bearing area on the material being fastened. It may or may not have a flush flange feature.

right-hand left internal (includes thru thread) thread direction, 2a right external thread class, right-hand right external thread direction, 0.484 inches minimum and 0.516 inches maximum right external thread length, 2b left internal (includes thru thread) 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: 2a right external
Thread Class: 2b left internal (includes thru thread)
Thread Direction: right-hand right external
Thread Direction: right-hand left internal (includes thru thread)
Thread Length: 0.484 inches minimum and 0.516 inches maximum right external
Thread Length: 0.375 inches minimum left internal (includes thru thread)
Length: 1.000 inches nominal
Cross-Sectional Shape: hexagon
Width Across Flats: 0.500 inches nominal
Thread Quantity Per Inch: 20 right external
Thread Quantity Per Inch: 32 left internal (includes thru thread)
Nominal Thread Size: 0.190 inches left internal (includes thru thread)
Nominal Thread Size: 0.250 inches right external
Right Projection Diameter: 0.250 inches nominal
Right Projection Length: 0.484 inches minimum and 0.516 inches maximum
Material: steel comp 303 overall
Material Document And Classification: qq-s-764 fed spec single material response overall
Surface Treatment: passivate overall
Surface Treatment Document And Classification: mil-f-14072 e300 mil spec single treatment response overall
Style Designator: left internal and right external thread
Thread Series Designator: unc right external
Thread Series Designator: unf left internal (includes thru thread)

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
14290-H-SS-1.000-12(B-1/4-20)	Spacing Threaded Standoff
91004V0024-1	Spacing Threaded Standoff

FAQs

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

What is the FSCG of the NSN 5340-01-429-2431?

The FSCG of the NSN 5340-01-429-2431 is 5340

Does NSN 5340-01-429-2431 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 5340-01-429-2431 contain precious materials?

Item does not contain precious metal.

Does NSN 5340-01-429-2431 contain hazardous materials?

Indicates there is no information in the hmirs. The nsn is in a fsc in table ii of fed std 313 and a msds may be required by the user. The requirement for a msds is dependent on a hazard determination of the supplier or the intended end use of item.

When the NSN 5340-01-429-2431 was assigned to the Federal Catalog?

It was assigned 30 years ago, on Sat, Apr 6, 1996