5305-00-639-2706

Find complete technical information, availability, and procurement data for: 5305-00-639-2706
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-639-2706

Item Name Code

18257

Assigment Date

01/01/1963 (63 years ago)

1.022 inches minimum and 1.072 inches maximum thread length, 3a thread class, hexagon head style, 1.052 inches minimum and 1.072 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: 3a
Thread Direction: right-hand
Thread Length: 1.022 inches minimum and 1.072 inches maximum
Fastener Length: 1.052 inches minimum and 1.072 inches maximum
Head Style: hexagon
Head Height: 0.318 inches minimum and 0.338 inches maximum
Width Between Flats: 0.616 inches minimum and 0.627 inches maximum
Hole Diameter: 0.070 inches nominal
Nominal Thread Diameter: 0.438 inches
Hole Quantity: 6
Hole Type: drilled
Thread Quantity Per Inch: 20
Hardness Rating: 26.0 rockwell c minimum and 32.0 rockwell c maximum overall
Hole Configuration Style: hexagon longitudinal hole
Surface Finish: 32.0 microinches threads
Surface Finish: 63.0 microinches bearing surface of head
Surface Finish: 63.0 microinches grip
Material: steel comp 8740 overall
Material Document And Classification: ams 6322 assn std single material response overall
Surface Treatment: cadmium overall
Surface Treatment Document And Classification: ams 2400 assn std single treatment response overall
Thread Series Designator: unf

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
AN104111	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-00-639-2706?

The FSCG of the NSN 5305-00-639-2706 is 5305

Does the NSN 5305-00-639-2706 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-639-2706 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 5305-00-639-2706 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-639-2706 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 5305-00-639-2706 was assigned to the Federal Catalog?

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