004-003005-002

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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-187-2426

Item Name Code

14218

Assigment Date

01/01/1961 (65 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.

0.078 inches minimum and 0.088 inches maximum material thickness, mrap rg-33 end item identification, 155000 pounds per square inch minimum tensile strength, 0.586 inches maximum outside diameter, 0.318 inches minimum and 0.328 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: 0.318 inches minimum and 0.328 inches maximum
Outside Diameter: 0.586 inches maximum
Material Thickness: 0.078 inches minimum and 0.088 inches maximum
End Item Identification: mrap rg-33
Minimum Tensile Strength: 155000 pounds per square inch
Hardness Rating: 33.0 rockwell c minimum and 40.0 rockwell c maximum
Material: nickel alloy a overall
Material Document And Classification: qq-n-286 fed spec single material response overall
Style Designator: split helical-right hand

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5310-00-209-0757	No Name Available	08/01/1979
5310-01-158-5005	No Name Available	05/01/1995

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
004-003005-002	Lock Washer
2477283-F-16	Lock Washer
312-286	Lock Washer
MS35338-121	Lock Washer

FAQs

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

What is the FSCG of the NSN 5310-00-187-2426?

The FSCG of the NSN 5310-00-187-2426 is 5310

Does the NSN 5310-00-187-2426 have a Schedule B code assigned?

Yes, the Schedule B code is 7508900000

Does NSN 5310-00-187-2426 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 5310-00-187-2426 contain precious materials?

Precious metal content is unknown

Does NSN 5310-00-187-2426 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 5310-00-187-2426 was assigned to the Federal Catalog?

It was assigned 65 years ago, on Sun, Jan 1, 1961