5305-00-638-0503

Find complete technical information, availability, and procurement data for: 5305-00-638-0503
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-638-0503

Item Name Code

06657

Assigment Date

01/01/1963 (63 years ago)

2a thread class, 0.219 inches minimum and 0.250 inches maximum fastener length, right-hand thread direction, round head style, 0.208 inches minimum 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: 0.208 inches minimum
Fastener Length: 0.219 inches minimum and 0.250 inches maximum
Head Style: round
Head Diameter: 0.169 inches minimum and 0.187 inches maximum
Head Height: 0.078 inches nominal
Internal Drive Style: slot
Nominal Thread Diameter: 0.099 inches
Thread Quantity Per Inch: 48
Minimum Tensile Strength: 80000 pounds per square inch
Screw Material: steel comp 303 or steel comp 303se or steel comp 430 or steel comp 302
Screw Material Document And Classification: mil-s-7720 mil spec 1st material response or mil-s-18732 mil spec 2nd material response or qq-s-763 fed spec 3rd material response or mil-s-7720 mil spec 4th material response
Screw Surface Treatment: passivate
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Below is a list of NSNs that have been officially superseded by this NSN: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
5305-00-271-5010	No Name Available	01/01/1960
5305-00-783-0183	No Name Available	12/05/1966

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
AN515C3-4	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-00-638-0503?

The FSCG of the NSN 5305-00-638-0503 is 5305

Does the NSN 5305-00-638-0503 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-638-0503 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 5305-00-638-0503 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-00-638-0503 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 5305-00-638-0503 was assigned to the Federal Catalog?

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