5310-00-391-0421

Find complete technical information, availability, and procurement data for: 5310-00-391-0421
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-391-0421

Item Name Code

14218

Assigment Date

01/01/1963 (63 years ago)

A nut having 6 flat sides and an integral washer which extends beyond the flats or periphery. An integral feature is incorporated for locking on the threads of a mating member.

0.018 inches minimum and 0.023 inches maximum material thickness, 0.325 inches minimum and 0.340 inches maximum outside diameter, steel overall material, 0.168 inches minimum and 0.176 inches maximum hole diameter, cadmium 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: 0.168 inches minimum and 0.176 inches maximum
Outside Diameter: 0.325 inches minimum and 0.340 inches maximum
Material Thickness: 0.018 inches minimum and 0.023 inches maximum
Material: steel overall
Surface Treatment: cadmium overall
Surface Treatment Document And Classification: ams 2400 assn std single treatment response overall
Style Designator: flat internal teeth

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
6710504	Lock Washer

FAQs

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

What is the FSCG of the NSN 5310-00-391-0421?

The FSCG of the NSN 5310-00-391-0421 is 5310

Does the NSN 5310-00-391-0421 have a Schedule B code assigned?

Yes, the Schedule B code is 7318210000

Does NSN 5310-00-391-0421 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 5310-00-391-0421 contain precious materials?

Precious metal content is unknown

Does NSN 5310-00-391-0421 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 5310-00-391-0421 was assigned to the Federal Catalog?

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