5340-01-421-7840

Find complete technical information, availability, and procurement data for: 5340-01-421-7840
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5340 Commercial Hardware

National Stock Number

5340-01-421-7840

Item Name Code

40280

Assigment Date

11/15/1995 (30 years ago)

A collection of items, which provide alarm and monitor functions.

2b right internal thread class, 2a left external thread class, 0.2500 inches nominal left external thread length, right-hand left external thread direction, right-hand right internal thread direction

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 left external
Thread Class: 2b right internal
Thread Direction: right-hand left external
Thread Direction: right-hand right internal
Thread Length: 0.2500 inches nominal left external
Thread Length: 0.3750 inches nominal right internal
Length: 0.3125 inches nominal
Cross-Sectional Shape: hexagon
Width Across Flats: 0.2500 inches nominal
Thread Quantity Per Inch: 32 left external
Thread Quantity Per Inch: 32 right internal
Nominal Thread Size: 0.1380 inches left external
Nominal Thread Size: 0.1380 inches right internal
Right Projection Diameter: 0.1380 inches nominal
Right Projection Length: 0.2500 inches nominal
Material: aluminum alloy 2011 or aluminum alloy 6061 or aluminum alloy 6063 standoff
Material Document And Classification: qq-a-225/3 fed spec single material response or qq-a-225/8 fed spec single material response or qq-a-200/9 fed spec single material response standoff
Surface Treatment: chromate standoff
Surface Treatment Document And Classification: mil-a-5541 mil spec single treatment response standoff
Style Designator: left internal and right external thread
Thread Series Designator: unc left external
Thread Series Designator: unc right internal

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
4531-632-A-6	Spacing Threaded Standoff

FAQs

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

What is the FSCG of the NSN 5340-01-421-7840?

The FSCG of the NSN 5340-01-421-7840 is 5340

Does NSN 5340-01-421-7840 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 5340-01-421-7840 contain precious materials?

Item does not contain precious metal.

Does NSN 5340-01-421-7840 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 5340-01-421-7840 was assigned to the Federal Catalog?

It was assigned 30 years ago, on Wed, Nov 15, 1995