5306-00-278-9423

Find complete technical information, availability, and procurement data for: 5306-00-278-9423
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5306 Bolts

National Stock Number

5306-00-278-9423

Item Name Code

06675

Assigment Date

01/01/1961 (65 years ago)

0.826 inches minimum thread length, hexagon head style, 3a thread class, 3.920 inches nominal 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: 0.826 inches minimum
Fastener Length: 3.920 inches nominal
Head Style: hexagon
Head Height: 0.400 inches minimum and 0.420 inches maximum
Width Between Flats: 1.052 inches minimum and 1.072 inches maximum
First Diameter From Head: 0.751 inches minimum and 0.752 inches maximum
Second Diameter From Head: 0.690 inches nominal
Third Diameter From Head: 0.751 inches minimum and 0.752 inches maximum
Fourth Diameter From Head: 0.690 inches nominal
Fifth Diameter From Head: 0.751 inches minimum and 0.752 inches maximum
Distance From Largest Bearing Surface Of Head To End Of First Diameter: 0.590 inches nominal
Distance From Largest Bearing Surface Of Head To End Of Second Diameter: 1.260 inches nominal
Distance From Largest Bearing Surface Of Head To End Of Third Diameter: 1.760 inches nominal
Distance From Largest Bearing Surface Of Head To End Of Fourth Diameter: 2.440 inches nominal
Distance From Largest Bearing Surface Of Head To End Of Fifth Diameter: 2.940 inches nominal
Nominal Thread Diameter: 0.750 inches
Thread Quantity Per Inch: 16
Hardness Rating: 32.0 rockwell c minimum and 36.0 rockwell c maximum overall
Externally Relieved Body Diameter Quantity: 5
Special Features: two slots 0.062 in. by 0.145 in. by 1.010 in. equally spaced vertical to thd
Material: steel comp 4340 overall
Surface Treatment: phosphate overall
Surface Treatment Document And Classification: ams 2481 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
6829919	Externally Relieved Body Bolt

FAQs

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

What is the FSCG of the NSN 5306-00-278-9423?

The FSCG of the NSN 5306-00-278-9423 is 5306

Does the NSN 5306-00-278-9423 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5306-00-278-9423 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 5306-00-278-9423 contain precious materials?

Precious metal content is unknown

Does NSN 5306-00-278-9423 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 5306-00-278-9423 was assigned to the Federal Catalog?

It was assigned 65 years ago, on Sun, Jan 1, 1961