5305-00-558-9491

Find complete technical information, availability, and procurement data for: 5305-00-558-9491
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-558-9491

Item Name Code

06657

Assigment Date

01/01/1963 (63 years ago)

0.188 inches nominal fastener length, round head style, 0.188 inches minimum thread length, right-hand thread direction, 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: 0.188 inches minimum
Fastener Length: 0.188 inches nominal
Head Style: round
Head Diameter: 0.250 inches nominal
Head Height: 0.097 inches nominal
Internal Drive Style: slot
Nominal Thread Diameter: 0.138 inches
Thread Quantity Per Inch: 32
Screw Material: steel comp 1118
Screw Material Document And Classification: qq-s-637 fed spec single material response
Screw Surface Treatment: cadmium
Thread Series Designator: unc

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5305-00-639-1208	No Name Available	12/21/2018

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
MR0-603SCN	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-00-558-9491?

The FSCG of the NSN 5305-00-558-9491 is 5305

Does the NSN 5305-00-558-9491 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-558-9491 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 5305-00-558-9491 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-558-9491 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 5305-00-558-9491 was assigned to the Federal Catalog?

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