5305-00-437-3579

Find complete technical information, availability, and procurement data for: 5305-00-437-3579
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-437-3579

Item Name Code

18257

Assigment Date

09/10/1969 (56 years ago)

A pliable rubber, felt, leather, or composition ring-shaped element, split or solid; with or without spring or spreader, having a metal shell on all or a portion of at least two of the outer surfaces. It may be designed to be either bolt mounted or pressmounted between fixed and moveable parts to form a tight and effective seal by the pressure of the spring or spreader or the resiliency inherent in the element material. Excludes:packing with retainer.

hexagon head style, 2a thread class, 1.000 inches minimum thread length, right-hand thread direction, 5.500 inches nominal 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: 2a
Thread Direction: right-hand
Thread Length: 1.000 inches minimum
Fastener Length: 5.500 inches nominal
Head Style: hexagon
Head Height: 0.163 inches nominal
Width Between Flats: 0.437 inches nominal
Nominal Thread Diameter: 0.250 inches
Thread Quantity Per Inch: 20
Material: steel overall
Material Document And Classification: sae gr 2 assn std single material response overall
Surface Treatment: phosphate overall
Surface Treatment Document And Classification: mil-p-16232,type m,class 2 mil spec single treatment response 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
1076818	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-00-437-3579?

The FSCG of the NSN 5305-00-437-3579 is 5305

Does the NSN 5305-00-437-3579 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-437-3579 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 5305-00-437-3579 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-437-3579 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 5305-00-437-3579 was assigned to the Federal Catalog?

It was assigned 56 years ago, on Wed, Sep 10, 1969