138657

View detailed technical data, stock status, and sourcing information for: 138657
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5306 Bolts

National Stock Number

5306-00-638-3810

Item Name Code

06675

Assigment Date

01/01/1963 (63 years ago)

right-hand thread direction, dee chamfer head style, 0.770 inches nominal head diameter, 3.320 inches nominal fastener length, 0.590 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 Direction: right-hand
Thread Length: 0.590 inches minimum
Fastener Length: 3.320 inches nominal
Head Style: dee chamfer
Head Diameter: 0.770 inches nominal
Head Height: 0.140 inches nominal
Distance From Centerline To Flat: 0.338 inches minimum and 0.342 inches maximum
First Diameter From Head: 0.366 inches minimum and 0.368 inches maximum
Second Diameter From Head: 0.285 inches minimum and 0.289 inches maximum
Distance From Largest Bearing Surface Of Head To End Of First Diameter: 0.220 inches nominal
Distance From Largest Bearing Surface Of Head To End Of Second Diameter: 2.700 inches minimum and 2.740 inches maximum
Nominal Thread Diameter: 0.375 inches
Nonstandard Thread Pitch Diameter: +0.3455 to 0.3474 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: 2
Material: copper alloy 172 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
138657	Externally Relieved Body Bolt

FAQs

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

What is the FSCG of the NSN 5306-00-638-3810?

The FSCG of the NSN 5306-00-638-3810 is 5306

Does the NSN 5306-00-638-3810 have a Schedule B code assigned?

Yes, the Schedule B code is 7415338550

Does NSN 5306-00-638-3810 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 5306-00-638-3810 contain precious materials?

Precious metal content is unknown

Does NSN 5306-00-638-3810 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 5306-00-638-3810 was assigned to the Federal Catalog?

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