51804-021

View detailed technical data, stock status, and sourcing information for: 51804-021
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-228-7591

Item Name Code

14218

Assigment Date

05/11/1973 (53 years ago)

An arm, usually metal, designed to mount the blade, windshield wiper and transmit motion from the driving member.

0.014 inches minimum and 0.018 inches maximum material thickness, drawn-general purpose heat treatment, 0.255 inches minimum and 0.270 inches maximum outside diameter, 85.0 rockwell b minimum and 95.0 rockwell b maximum hardness rating, 0.116 inches minimum and 0.123 inches maximum hole diameter

Product Characteristics

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

Hole Diameter: 0.116 inches minimum and 0.123 inches maximum
Outside Diameter: 0.255 inches minimum and 0.270 inches maximum
Material Thickness: 0.014 inches minimum and 0.018 inches maximum
Hardness Rating: 85.0 rockwell b minimum and 95.0 rockwell b maximum
Heat Treatment: drawn-general purpose
Material: copper alloy overall
Surface Treatment: cadmium and chromate overall
Style Designator: flat internal teeth

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5310-00-404-3824	No Name Available	06/01/1986

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
51804-021	Lock Washer

FAQs

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

What is the FSCG of the NSN 5310-00-228-7591?

The FSCG of the NSN 5310-00-228-7591 is 5310

Does the NSN 5310-00-228-7591 have a Schedule B code assigned?

Yes, the Schedule B code is 7415210000

Does NSN 5310-00-228-7591 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 5310-00-228-7591 contain precious materials?

Precious metal content is unknown

Does NSN 5310-00-228-7591 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 5310-00-228-7591 was assigned to the Federal Catalog?

It was assigned 53 years ago, on Fri, May 11, 1973