201991A

View detailed technical data, stock status, and sourcing information for: 201991A
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5306 Bolts

National Stock Number

5306-00-786-4021

Item Name Code

06659

Assigment Date

01/01/1963 (63 years ago)

right-hand thread direction, 3a thread class, hexagon head style, 0.625 inches nominal fastener length, 0.469 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 Class: 3a
Thread Direction: right-hand
Thread Length: 0.469 inches minimum
Fastener Length: 0.625 inches nominal
Head Style: hexagon
Head Height: 0.208 inches minimum and 0.230 inches maximum
Width Between Flats: 0.500 inches nominal
Washer Quantity: 1
Primary Washer Outside Diameter: 0.540 inches minimum and 0.556 inches maximum
Primary Washer Material Thickness: 0.078 inches nominal

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5306-00-207-9642	No Name Available	02/13/1970
5305-01-074-6771	No Name Available	04/01/1991

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
201991A	Assembled Washer Bolt

FAQs

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

What is the FSCG of the NSN 5306-00-786-4021?

The FSCG of the NSN 5306-00-786-4021 is 5306

Does NSN 5306-00-786-4021 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 5306-00-786-4021 contain precious materials?

Precious metal content is unknown

Does NSN 5306-00-786-4021 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 5306-00-786-4021 was assigned to the Federal Catalog?

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