5340-00-285-5231

Find complete technical information, availability, and procurement data for: 5340-00-285-5231
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5340 Commercial Hardware

National Stock Number

5340-00-285-5231

Item Name Code

40280

Assigment Date

01/01/1963 (63 years ago)

4.312 inches nominal flange thickness, right-hand right external thread direction, right-hand left internal (includes thru thread) thread direction, 2b left internal (includes thru thread)2a right external thread class, 0.312 inches nominal left internal (includes thru thread)0.500 inches minimum right external thread length

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 left internal (includes thru thread)2a right external
Thread Direction: right-hand right external
Thread Direction: right-hand left internal (includes thru thread)
Thread Length: 0.312 inches nominal left internal (includes thru thread)0.500 inches minimum right external
Flange Thickness: 4.312 inches nominal
Length: 5.062 inches nominal
Flange Width Across Flats: 0.500 inches nominal
Thread Quantity Per Inch: 20 right external
Thread Quantity Per Inch: 24 left internal (includes thru thread)
Nominal Thread Size: 0.190 inches left internal (includes thru thread)
Nominal Thread Size: 0.250 inches right external
Special Features: end of nut end has 0.031 in. by 45.0 deg chamfer; start of stud end has0.031 in. by 90.0 deg countersunk
Material: steel comp 1117 standoff
Material Document And Classification: qq-s-633 fed spec single material response standoff
Surface Treatment: zinc and chromate standoff
Style Designator: flanged with left internal thread
Thread Series Designator: unc left internal (includes thru thread)
Thread Series Designator: unc right external

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5307-00-207-9934	No Name Available	01/02/1975

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
7598792	Spacing Threaded Standoff
BA707819	Spacing Threaded Standoff

FAQs

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

What is the FSCG of the NSN 5340-00-285-5231?

The FSCG of the NSN 5340-00-285-5231 is 5340

Does NSN 5340-00-285-5231 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 5340-00-285-5231 contain precious materials?

Precious metal content is unknown

Does NSN 5340-00-285-5231 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 5340-00-285-5231 was assigned to the Federal Catalog?

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