A20185

View detailed technical data, stock status, and sourcing information for: A20185
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-517-4192

Item Name Code

13393

Assigment Date

01/01/1963 (63 years ago)

0.057 inches minimum and 0.067 inches maximum thickness, round center hole shape style, rectangular cross-sectional shape style, round peripheral shape style, 0.250 inches nominal hole diameter

Product Characteristics

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

Cross-Sectional Shape Style: rectangular
Hole Diameter: 0.250 inches nominal
Peripheral Shape Style: round
Center Hole Shape Style: round
Thickness: 0.057 inches minimum and 0.067 inches maximum
Overall Diameter: 0.495 inches minimum and 0.505 inches maximum
End Item Identification: machine gun,cal. .50 (m2); nsn 1005-00-322-9715
Heat Treatment: quenched and tempered
Material: steel comp 1010 overall
Material Document And Classification: qq-s-634 fed spec single material response overall
Surface Treatment: phosphate overall

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5310-00-151-5482	No Name Available	02/13/1985

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
1005005174192	Flat Washer
5174192	Flat Washer
A10726	Flat Washer
A20185	Flat Washer
A20481	Flat Washer

FAQs

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

What is the FSCG of the NSN 5310-00-517-4192?

The FSCG of the NSN 5310-00-517-4192 is 5310

Does the NSN 5310-00-517-4192 have a Schedule B code assigned?

Yes, the Schedule B code is 7318220000

Does NSN 5310-00-517-4192 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 5310-00-517-4192 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-00-517-4192 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 5310-00-517-4192 was assigned to the Federal Catalog?

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