6748959

View detailed technical data, stock status, and sourcing information for: 6748959
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5306 Bolts

National Stock Number

5306-00-638-4744

Item Name Code

06675

Assigment Date

01/01/1963 (63 years ago)

0.522 inches minimum and 0.682 inches maximum thread length, 2.250 inches nominal fastener length, hexagon head style, 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: 0.522 inches minimum and 0.682 inches maximum
Fastener Length: 2.250 inches nominal
Head Style: hexagon
Head Height: 0.188 inches nominal
Width Between Flats: 0.492 inches minimum and 0.502 inches maximum
First Diameter From Head: 0.308 inches minimum and 0.318 inches maximum
Second Diameter From Head: 0.345 inches minimum and 0.346 inches maximum
Third Diameter From Head: 0.248 inches minimum and 0.258 inches maximum
Distance From Largest Bearing Surface Of Head To End Of First Diameter: 0.078 inches nominal
Distance From Largest Bearing Surface Of Head To End Of Second Diameter: 1.490 inches minimum and 1.550 inches maximum
Distance From Largest Bearing Surface Of Head To End Of Third Diameter: 1.568 inches minimum and 1.628 inches maximum
Nominal Thread Diameter: 0.312 inches
Thread Quantity Per Inch: 24
Hardness Rating: 26.0 rockwell c minimum and 32.0 rockwell c maximum overall
Externally Relieved Body Diameter Quantity: 3
Material: steel overall
Material Document And Classification: ems-85010 fscm 73342 mfr ref 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
6748959	Externally Relieved Body Bolt

FAQs

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

What is the FSCG of the NSN 5306-00-638-4744?

The FSCG of the NSN 5306-00-638-4744 is 5306

Does the NSN 5306-00-638-4744 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5306-00-638-4744 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 5306-00-638-4744 contain precious materials?

Precious metal content is unknown

Does NSN 5306-00-638-4744 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 5306-00-638-4744 was assigned to the Federal Catalog?

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