5306-00-018-6491

Find complete technical information, availability, and procurement data for: 5306-00-018-6491
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5306 Bolts

National Stock Number

5306-00-018-6491

Item Name Code

06659

Assigment Date

01/01/1963 (63 years ago)

A bolt, machine on which has been assembled one or more nonremovable washers. See also screw, assembled washer.

0.369 inches minimum and 0.400 inches maximum thread length, 0.469 inches minimum and 0.500 inches maximum fastener length, right-hand thread direction, 2a thread class, hexagon head style

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: 0.369 inches minimum and 0.400 inches maximum
Fastener Length: 0.469 inches minimum and 0.500 inches maximum
Head Style: hexagon
Head Height: 0.172 inches minimum and 0.190 inches maximum
Width Between Flats: 0.428 inches minimum and 0.437 inches maximum
Washer Quantity: 1
Nominal Thread Diameter: 0.250 inches
Thread Quantity Per Inch: 20
Hardness Rating: 30.0 rockwell c minimum and 40.0 rockwell c maximum overall
Primary Washer Outside Diameter: 0.460 inches minimum and 0.475 inches maximum
Primary Washer Style: flat external teeth
Primary Washer Material Thickness: 0.023 inches minimum and 0.028 inches maximum
Material: steel comp 1050 or steel comp 1566 overall
Material Document And Classification: sae assn std all material responses overall
Surface Treatment: cadmium or zinc overall
Thread Series Designator: unc

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5306-00-470-3390	No Name Available	03/18/1972

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
186491	Assembled Washer Bolt
5306000186491	Assembled Washer Bolt
T306000186491	Assembled Washer Bolt

FAQs

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

What is the FSCG of the NSN 5306-00-018-6491?

The FSCG of the NSN 5306-00-018-6491 is 5306

Does the NSN 5306-00-018-6491 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5306-00-018-6491 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 5306-00-018-6491 contain precious materials?

Precious metal content is unknown

Does NSN 5306-00-018-6491 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 5306-00-018-6491 was assigned to the Federal Catalog?

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