5310-01-221-7021

Find complete technical information, availability, and procurement data for: 5310-01-221-7021
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-221-7021

Item Name Code

29736

Assigment Date

12/03/1985 (40 years ago)

0.340 inches nominal overall height, 0.560 inches nominal washer outside diameter, right-hand thread direction, free-running all metal design locking feature, 3b thread class

Product Characteristics

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

Thread Class: 3b
Thread Direction: right-hand
Locking Feature: free-running all metal design
Washer Outside Diameter: 0.560 inches nominal
Overall Height: 0.340 inches nominal
Nut Style: flat
Nut Height: 0.243 inches minimum and 0.253 inches maximum
Width Across Flats: 0.367 inches minimum and 0.376 inches maximum
Thread Series: unjf
Thread Quantity Per Inch: 24
Nominal Thread Size: 0.312 inches
Material: steel overall
Surface Treatment: cadmium overall

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
KFN542-5S	Assembled Washe Self-Locking Nut

FAQs

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

What is the FSCG of the NSN 5310-01-221-7021?

The FSCG of the NSN 5310-01-221-7021 is 5310

Does the NSN 5310-01-221-7021 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-01-221-7021 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 5310-01-221-7021 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-01-221-7021 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 5310-01-221-7021 was assigned to the Federal Catalog?

It was assigned 40 years ago, on Tue, Dec 3, 1985