5310-00-939-0921

Find complete technical information, availability, and procurement data for: 5310-00-939-0921
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-939-0921

Item Name Code

14218

Assigment Date

11/27/1965 (60 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.

0.042 inches minimum and 0.050 inches maximum material thickness, copper alloy or copper alloy 425 overall material, 92.0 rockwell b minimum and 97.0 rockwell b maximum hardness rating, 0.641 inches minimum and 0.663 inches maximum hole diameter, 1.045 inches minimum and 1.070 inches maximum 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: 0.641 inches minimum and 0.663 inches maximum
Outside Diameter: 1.045 inches minimum and 1.070 inches maximum
Material Thickness: 0.042 inches minimum and 0.050 inches maximum
Hardness Rating: 92.0 rockwell b minimum and 97.0 rockwell b maximum
Material: copper alloy or copper alloy 425 overall
Material Document And Classification: qq-b-750,comp a fed spec 1st material response or cda assn std 2nd material response overall
Style Designator: flat external teeth
Nondefinitive Spec/Std Data: 2 type and 1 style and 3 or 4 composition

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5310-00-685-7758	No Name Available	09/01/2023
5310-00-833-3599	No Name Available	08/28/1968

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
MS35335-81	Lock Washer
MS35335-95	Lock Washer

FAQs

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

What is the FSCG of the NSN 5310-00-939-0921?

The FSCG of the NSN 5310-00-939-0921 is 5310

Does the NSN 5310-00-939-0921 have a Schedule B code assigned?

Yes, the Schedule B code is 7415210000

Does NSN 5310-00-939-0921 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 5310-00-939-0921 contain precious materials?

Precious metal content is unknown

Does NSN 5310-00-939-0921 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 5310-00-939-0921 was assigned to the Federal Catalog?

It was assigned 60 years ago, on Sat, Nov 27, 1965