FC6783

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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-012-0379

Item Name Code

14218

Assigment Date

01/01/1963 (63 years ago)

A washer, usually round, with a centrally-located hole. Its edges and two bearing surfaces are designed in such a way that applied pressure brings into play the spring tension and/or frictional locking principle that materially resists any tendency toward turning. It may be made of one or two pieces.

0.575 inches nominal outside diameter, steel overall material, 45.0 rockwell c minimum and 53.0 rockwell c maximum hardness rating, 0.056 inches minimum and 0.066 inches maximum material thickness, 0.319 inches minimum and 0.333 inches maximum hole 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: 0.319 inches minimum and 0.333 inches maximum
Outside Diameter: 0.575 inches nominal
Material Thickness: 0.056 inches minimum and 0.066 inches maximum
Hardness Rating: 45.0 rockwell c minimum and 53.0 rockwell c maximum
Material: steel overall
Material Document And Classification: fed std 66,aisi c1060 thru c1080 or sae 1060 thru 1080 fed std all material responses overall
Surface Treatment: cadmium or zinc overall
Surface Treatment Document And Classification: qq-p-416 fed spec 1st treatment response or qq-z-325 fed spec 2nd treatment response overall
Style Designator: split helical-right hand
Nondefinitive Spec/Std Data: 1 style and a class

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5310-00-194-9176	No Name Available	01/01/1963
5310-00-656-7407	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
10-20395	Lock Washer
120379	Lock Washer
5310000120379	Lock Washer
7744771	Lock Washer
FC6783	Lock Washer
FIG2213-5-16	Lock Washer
MS35337-26	Lock Washer
V11-1-030	Lock Washer

FAQs

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

What is the FSCG of the NSN 5310-00-012-0379?

The FSCG of the NSN 5310-00-012-0379 is 5310

Does the NSN 5310-00-012-0379 have a Schedule B code assigned?

Yes, the Schedule B code is 7318210000

Does NSN 5310-00-012-0379 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 5310-00-012-0379 contain precious materials?

Precious metal content is unknown

Does NSN 5310-00-012-0379 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 5310-00-012-0379 was assigned to the Federal Catalog?

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