521937

View detailed technical data, stock status, and sourcing information for: 521937
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5306 Bolts

National Stock Number

5306-00-638-7165

Item Name Code

06676

Assigment Date

01/01/1963 (63 years ago)

3a thread class, 0.377 inches minimum thread length, right-hand thread direction, round w/wrench flats head style, 0.470 inches nominal fastener length

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: 0.377 inches minimum
Fastener Length: 0.470 inches nominal
Head Style: round w/wrench flats
Head Diameter: 0.880 inches nominal
Head Height: 0.090 inches nominal
Width Between Flats: 0.684 inches minimum and 0.688 inches maximum
Counterbore Diameter: 0.250 inches nominal
Concentric Hole Diameter: 0.156 inches nominal
Nominal Thread Diameter: 0.375 inches
Thread Quantity Per Inch: 24
Hardness Rating: 32.0 rockwell c minimum and 38.0 rockwell c maximum overall
Material: steel overall
Material Document And Classification: ams 5080 assn std single material response overall
Style Designator: counterbore unthreaded
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
521937	Internally Relieved Body Bolt

FAQs

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

What is the FSCG of the NSN 5306-00-638-7165?

The FSCG of the NSN 5306-00-638-7165 is 5306

Does the NSN 5306-00-638-7165 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5306-00-638-7165 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 5306-00-638-7165 contain precious materials?

Precious metal content is unknown

Does NSN 5306-00-638-7165 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 5306-00-638-7165 was assigned to the Federal Catalog?

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