520299

View detailed technical data, stock status, and sourcing information for: 520299
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-943-2474

Item Name Code

01869

Assigment Date

12/21/1965 (60 years ago)

A washer of nonresilient material usually having two parallel bearing surfaces. The outside and/or inside edges have one or more protuberances. The ends and/or edges may be prebent at any angle or the protuberances may be prebent at any angle to the bearing surfaces. The keys or lugs may be fitted into keyways in adjacent material or they may be bent over after application to hold or lock one or more items in place. Excludes:thrust type washer.

1.780 inches minimum and 1.790 inches maximum distance from centerline to inside of prebent key, 4.140 inches minimum and 4.160 inches maximum outside diameter, 3.820 inches minimum and 3.840 inches maximum hole diameter, 0.320 inches minimum and 0.340 inches maximum internal prebent key length, 0.190 inches minimum and 0.210 inches maximum internal prebent key width

Product Characteristics

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

Hole Diameter: 3.820 inches minimum and 3.840 inches maximum
Outside Diameter: 4.140 inches minimum and 4.160 inches maximum
Internal Prebent Key Length: 0.320 inches minimum and 0.340 inches maximum
Internal Prebent Key Width: 0.190 inches minimum and 0.210 inches maximum
Distance From Centerline To Inside Of Prebent Key: 1.780 inches minimum and 1.790 inches maximum
Material Thickness: 0.038 inches minimum and 0.048 inches maximum
Special Features: 12 internal keys equally spaced
Material: steel comp 4130 or steel comp 8630 overall
Material Document And Classification: ams6350 assn std 1st material response or ams6355 assn std 2nd material response overall
Style Designator: key

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
520299	Key Washer

FAQs

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

What is the FSCG of the NSN 5310-00-943-2474?

The FSCG of the NSN 5310-00-943-2474 is 5310

Does the NSN 5310-00-943-2474 have a Schedule B code assigned?

Yes, the Schedule B code is 7318220000

Does NSN 5310-00-943-2474 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 5310-00-943-2474 contain precious materials?

Precious metal content is unknown

Does NSN 5310-00-943-2474 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 5310-00-943-2474 was assigned to the Federal Catalog?

It was assigned 60 years ago, on Tue, Dec 21, 1965