1243603-4

View detailed technical data, stock status, and sourcing information for: 1243603-4
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-205-8740

Item Name Code

13393

Assigment Date

01/01/1963 (63 years ago)

0.016 inches nominal thickness, round peripheral shape style, round center hole shape style, 0.189 inches minimum and 0.194 inches maximum hole diameter, rectangular cross-sectional shape style

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: 0.189 inches minimum and 0.194 inches maximum
Peripheral Shape Style: round
Center Hole Shape Style: round
Thickness: 0.016 inches nominal
Overall Diameter: 0.266 inches minimum and 0.297 inches maximum
Hardness Rating: 25.0 rockwell c minimum
Criticality Code Justification: feat
Special Features: flight safety critical aircraft part
Material: steel comp 304 overall
Material Document And Classification: qq-s-766,class 1 fed spec single material response overall

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5310-00-128-2368	No Name Available	07/09/2001
5310-00-579-1579	No Name Available	11/25/2003
5310-00-685-2491	No Name Available	06/01/2002
5310-01-015-9694	No Name Available	11/18/2016

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
1243603-4	Flat Washer
233942	Flat Washer
440637	Flat Washer
5710-37	Flat Washer
5710-37-15P	Flat Washer
911625-49	Flat Washer
CYRD836-3	Flat Washer

FAQs

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

What is the FSCG of the NSN 5310-00-205-8740?

The FSCG of the NSN 5310-00-205-8740 is 5310

Does the NSN 5310-00-205-8740 have a Schedule B code assigned?

Yes, the Schedule B code is 7318220000

Does NSN 5310-00-205-8740 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 5310-00-205-8740 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-00-205-8740 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 5310-00-205-8740 was assigned to the Federal Catalog?

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