7748639

View detailed technical data, stock status, and sourcing information for: 7748639
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5306 Bolts

National Stock Number

5306-00-783-5188

Item Name Code

06666

Assigment Date

01/01/1962 (64 years ago)

2a thread class, 0.460 inches minimum thread length, 0.860 inches nominal fastener length, flat chamfer head style, 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: 0.460 inches minimum
Fastener Length: 0.860 inches nominal
Head Style: flat chamfer
Head Diameter: 0.429 inches minimum and 0.438 inches maximum
Head Height: 0.306 inches minimum and 0.312 inches maximum
First Diameter From Head: 0.220 inches nominal
Distance From Largest Bearing Surface Of Head To End Of First Diameter: 0.400 inches nominal
Internal Drive Style: hexagon
Nominal Thread Diameter: 0.312 inches
Width Across Flats: 0.219 inches minimum and 0.221 inches maximum
Thread Quantity Per Inch: 18
Hardness Rating: 26.0 rockwell c nominal overall
Material: steel comp 8630 or steel comp 4037 overall
Surface Treatment: cadmium and chromate overall
Surface Treatment Document And Classification: qq-p-416,type 2 cl 3 fed spec single treatment response overall
Thread Series Designator: unc

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
1948537	Internal Wrenching Bolt
33657	Internal Wrenching Bolt
5306007835188	Internal Wrenching Bolt
72085	Internal Wrenching Bolt
7748639	Internal Wrenching Bolt

FAQs

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

What is the FSCG of the NSN 5306-00-783-5188?

The FSCG of the NSN 5306-00-783-5188 is 5306

Does the NSN 5306-00-783-5188 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5306-00-783-5188 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 5306-00-783-5188 contain precious materials?

Precious metal content is unknown

Does NSN 5306-00-783-5188 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 5306-00-783-5188 was assigned to the Federal Catalog?

It was assigned 64 years ago, on Mon, Jan 1, 1962