4T6811

View detailed technical data, stock status, and sourcing information for: 4T6811
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-285-5581

Item Name Code

06657

Assigment Date

01/01/1963 (63 years ago)

0.625 inches maximum thread length, 0.625 inches nominal fastener length, right-hand thread direction, hexagon head style, 3a 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: 3a
Thread Direction: right-hand
Thread Length: 0.625 inches maximum
Fastener Length: 0.625 inches nominal
Head Style: hexagon
Head Height: 0.094 inches nominal
Width Between Flats: 0.250 inches nominal
Internal Drive Style: cross recess type 1
Nominal Thread Diameter: 0.138 inches
Features Provided: casehardened
Thread Quantity Per Inch: 40
Screw Material: steel
Screw Surface Treatment: chromate zinc
Thread Series Designator: unf

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5815-00-309-2807	No Name Available	01/01/1960
5815-00-448-3727	No Name Available	01/01/1963
5305-00-639-6397	No Name Available	01/01/1963

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
4T6811	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-00-285-5581?

The FSCG of the NSN 5305-00-285-5581 is 5305

Does the NSN 5305-00-285-5581 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-285-5581 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 5305-00-285-5581 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-285-5581 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 5305-00-285-5581 was assigned to the Federal Catalog?

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