138578

View detailed technical data, stock status, and sourcing information for: 138578
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-013-8578

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.

1.1192 inches minimum and 1.144 inches maximum hole diameter, flat internal teeth style designator, 1.799 inches minimum and 1.830 inches maximum outside diameter, 0.059 inches minimum and 0.067 inches maximum material thickness, cadmium or zinc and chromate overall surface treatment

Product Characteristics

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

Hole Diameter: 1.1192 inches minimum and 1.144 inches maximum
Outside Diameter: 1.799 inches minimum and 1.830 inches maximum
Material Thickness: 0.059 inches minimum and 0.067 inches maximum
Surface Treatment: cadmium or zinc and chromate overall
Style Designator: flat internal teeth
Nondefinitive Spec/Std Data: a type

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5310-00-194-7375	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
138578	Lock Washer
MILW6986	Lock Washer
MS35333-33	Lock Washer

FAQs

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

What is the FSCG of the NSN 5310-00-013-8578?

The FSCG of the NSN 5310-00-013-8578 is 5310

Does NSN 5310-00-013-8578 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 5310-00-013-8578 contain precious materials?

Precious metal content is unknown

Does NSN 5310-00-013-8578 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 5310-00-013-8578 was assigned to the Federal Catalog?

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