CL21A7591-56

View detailed technical data, stock status, and sourcing information for: CL21A7591-56
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5325 Fastening Devices

National Stock Number

5325-00-255-4616

Item Name Code

07623

Assigment Date

01/01/1961 (65 years ago)

0.057 inches minimum and 0.060 inches maximum minor thickness, beveled one outside corner cross-sectional shape style, 0.075 inches minimum and 0.081 inches maximum major thickness, not casehardened casehardening indicator, 2.485 inches minimum and 2.525 inches maximum outside 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: beveled one outside corner
Casehardening Indicator: not casehardened
Outside Diameter: 2.485 inches minimum and 2.525 inches maximum
Minor Thickness: 0.057 inches minimum and 0.060 inches maximum
Major Thickness: 0.075 inches minimum and 0.081 inches maximum
Ring Style: internal
Usage Design: internal
Material Hardness Rating: 47.0 rockwell c minimum and 52.0 rockwell c maximum
Material: steel
Material Document And Classification: fed std 66,1066 to 1090 fed std single material response
Surface Treatment: cadmium and chromate

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5365-00-201-0015	No Name Available	10/01/1996

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
1667499-231	Retaining Ring
CL21A7591-56	Retaining Ring
MS16631-1231	Retaining Ring
N5002-231MD	Retaining Ring

FAQs

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

What is the FSCG of the NSN 5325-00-255-4616?

The FSCG of the NSN 5325-00-255-4616 is 5325

Does the NSN 5325-00-255-4616 have a Schedule B code assigned?

Yes, the Schedule B code is 9606100000

Does NSN 5325-00-255-4616 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 5325-00-255-4616 contain precious materials?

Precious metal content is unknown

Does NSN 5325-00-255-4616 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 5325-00-255-4616 was assigned to the Federal Catalog?

It was assigned 65 years ago, on Sun, Jan 1, 1961