5305-00-637-9525

Find complete technical information, availability, and procurement data for: 5305-00-637-9525
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-637-9525

Item Name Code

18257

Assigment Date

01/01/1963 (63 years ago)

3a thread class, right-hand thread direction, 0.367 inches minimum and 0.512 inches maximum thread length, hexagon head style, 0.641 inches minimum and 0.688 inches maximum fastener 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: 3a
Thread Direction: right-hand
Thread Length: 0.367 inches minimum and 0.512 inches maximum
Fastener Length: 0.641 inches minimum and 0.688 inches maximum
Head Style: hexagon
Head Height: 0.140 inches minimum and 0.172 inches maximum
Width Between Flats: 0.428 inches minimum and 0.440 inches maximum
Nominal Thread Diameter: 0.250 inches
Thread Quantity Per Inch: 28
Material: steel comp 321 or steel comp 347 overall
Material Document And Classification: qq-s-763 fed spec all material responses overall
Surface Treatment: passivate overall
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Below is a list of NSNs that have been officially superseded by this NSN: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
5306-00-576-2808	No Name Available	06/01/1976

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
947556-505	Hexagon Head Cap Screw
NAS-501-4-5A	Hexagon Head Cap Screw
NAS501-4-5A	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-00-637-9525?

The FSCG of the NSN 5305-00-637-9525 is 5305

Does the NSN 5305-00-637-9525 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-637-9525 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 5305-00-637-9525 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-637-9525 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 5305-00-637-9525 was assigned to the Federal Catalog?

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