5310-00-021-9891

Find complete technical information, availability, and procurement data for: 5310-00-021-9891
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-021-9891

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.

0.141 inches minimum and 0.150 inches maximum hole diameter, 0.275 inches minimum and 0.295 inches maximum outside diameter, flat internal teeth style designator, 0.017 inches minimum and 0.021 inches maximum material thickness

Product Characteristics

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

Hole Diameter: 0.141 inches minimum and 0.150 inches maximum
Outside Diameter: 0.275 inches minimum and 0.295 inches maximum
Material Thickness: 0.017 inches minimum and 0.021 inches maximum
Style Designator: flat internal teeth

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5310-00-638-5389	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
20489-33	Lock Washer
5402-063	Lock Washer
MS35333-88	Lock Washer

FAQs

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

What is the FSCG of the NSN 5310-00-021-9891?

The FSCG of the NSN 5310-00-021-9891 is 5310

Does NSN 5310-00-021-9891 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 5310-00-021-9891 contain precious materials?

Precious metal content is unknown

Does NSN 5310-00-021-9891 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 5310-00-021-9891 was assigned to the Federal Catalog?

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