5310-00-722-5639

Find complete technical information, availability, and procurement data for: 5310-00-722-5639
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-722-5639

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.

0.031 inches minimum and 0.037 inches maximum material thickness, 0.141 inches minimum and 0.148 inches maximum hole diameter, steel comp 302 and steel comp 420 overall material, 0.250 inches maximum outside diameter, 35.0 rockwell c minimum and 45.0 rockwell c maximum or 45.0 rockwell c minimum and 53.0 rockwell c maximum hardness rating

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 0.148 inches maximum
Outside Diameter: 0.250 inches maximum
Material Thickness: 0.031 inches minimum and 0.037 inches maximum
Hardness Rating: 35.0 rockwell c minimum and 45.0 rockwell c maximum or 45.0 rockwell c minimum and 53.0 rockwell c maximum
Material: steel comp 302 and steel comp 420 overall
Material Document And Classification: fed std 66 fed std single material response overall
Surface Treatment: passivate overall
Special Test Features: fleet ballistic missile quality as identified by quality control no. poso 911867
Surface Treatment Document And Classification: qq-p-35 fed spec single treatment response overall
Style Designator: split helical-right hand
Departure From Cited Designator: as modified by special test features

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
272 366 351	Lock Washer

FAQs

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

What is the FSCG of the NSN 5310-00-722-5639?

The FSCG of the NSN 5310-00-722-5639 is 5310

Does the NSN 5310-00-722-5639 have a Schedule B code assigned?

Yes, the Schedule B code is 7318210000

Does NSN 5310-00-722-5639 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 5310-00-722-5639 contain precious materials?

Precious metal content is unknown

Does NSN 5310-00-722-5639 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 5310-00-722-5639 was assigned to the Federal Catalog?

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