GS21-501-13

View detailed technical data, stock status, and sourcing information for: GS21-501-13
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-637-0484

Item Name Code

01852

Assigment Date

01/01/1963 (63 years ago)

knurled no. 1 head style, 2a thread class, 0.344 inches minimum and 0.406 inches maximum thread length, 0.803 inches minimum and 0.823 inches maximum fastener length, right-hand thread direction

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: 0.344 inches minimum and 0.406 inches maximum
Fastener Length: 0.803 inches minimum and 0.823 inches maximum
Head Style: knurled no. 1
Head Diameter: 0.469 inches minimum and 0.531 inches maximum
Head Height: 0.344 inches minimum and 0.406 inches maximum
First Diameter From Head: 0.175 inches minimum and 0.185 inches maximum
Distance From Largest Bearing Surface Of Head To End Of First Diameter: 0.397 inches minimum and 0.478 inches maximum
Internal Drive Style: slot
Nominal Thread Diameter: 0.250 inches
Thread Quantity Per Inch: 28
Externally Relieved Body Diameter Quantity: 1
Material: steel comp 302 or steel comp 303 overall
Material Document And Classification: mil-s-7720 mil spec 1st material response or qq-s-763 fed spec 2nd material response or astm a582 assn std 2nd material response 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Below is a list of NSNs that have been officially superseded by this NSN: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
5305-00-298-8474	No Name Available	08/03/1970

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
41590-2	Externally Relieved Body Screw
GS21-501-13	Externally Relieved Body Screw

FAQs

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

What is the FSCG of the NSN 5305-00-637-0484?

The FSCG of the NSN 5305-00-637-0484 is 5305

Does the NSN 5305-00-637-0484 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-637-0484 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 5305-00-637-0484 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-637-0484 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 5305-00-637-0484 was assigned to the Federal Catalog?

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