1663-7

View detailed technical data, stock status, and sourcing information for: 1663-7
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-680-5781

Item Name Code

06158

Assigment Date

01/01/1961 (65 years ago)

7 external keyway quantity, 0.188 inches nominal external keyway width, 0.015 inches nominal external keyway length, 0.505 inches nominal hole diameter, 0.625 inches nominal outside diameter

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Hole Diameter: 0.505 inches nominal
Outside Diameter: 0.625 inches nominal
External Keyway Length: 0.015 inches nominal
External Keyway Width: 0.188 inches nominal
External Keyway Quantity: 7
Material Thickness: 0.048 inches nominal
Material: steel comp 1040 or steel comp 1050 overall
Material Document And Classification: aisi assn std single material response overall

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
1650-00-564-0401	No Name Available	01/01/1963

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
1663-7	Keyway Washer

FAQs

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

What is the FSCG of the NSN 5310-00-680-5781?

The FSCG of the NSN 5310-00-680-5781 is 5310

Does the NSN 5310-00-680-5781 have a Schedule B code assigned?

Yes, the Schedule B code is 7318220000

Does NSN 5310-00-680-5781 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 5310-00-680-5781 contain precious materials?

Precious metal content is unknown

Does NSN 5310-00-680-5781 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 5310-00-680-5781 was assigned to the Federal Catalog?

It was assigned 65 years ago, on Sun, Jan 1, 1961