5305-01-643-6636

Find complete technical information, availability, and procurement data for: 5305-01-643-6636
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-643-6636

Item Name Code

18257

Assigment Date

04/08/2015 (11 years ago)

A metallic, floatable device of tower construction designed to be anchored in water to mark the location of channels, shoals, rocks, reefs, submerged obstacles, and the like, and to promote safe navigation of watercraft. It accommodates a lantern and may accommodate a sound making apparatus, such as a bell, gong, or whistle. See also buoy, navigational marker, unlighted, sound.

1.250 inches nominal fastener length, hexagon head style, right-hand thread direction, 2a thread class, 1.250 inches nominal 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: 2a
Thread Direction: right-hand
Thread Length: 1.250 inches nominal
Fastener Length: 1.250 inches nominal
Head Style: hexagon
Head Height: 0.281 inches nominal
Width Between Flats: 0.625 inches nominal
End Item Identification: f-15sa
Nominal Thread Diameter: 0.437 inches
Thread Quantity Per Inch: 14
Minimum Tensile Strength: 70000 pounds per square inch
Hardness Rating: 70.0 rockwell b minimum overall
Part Name Assigned By Controlling Agency: 18-8 s/s hex cap screw
Material: steel property class 18.8 overall
Thread Series Designator: unc

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
92240A671	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-643-6636?

The FSCG of the NSN 5305-01-643-6636 is 5305

Does the NSN 5305-01-643-6636 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-643-6636 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 5305-01-643-6636 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-643-6636 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 5305-01-643-6636 was assigned to the Federal Catalog?

It was assigned 11 years ago, on Wed, Apr 8, 2015