503B4-91-2

View detailed technical data, stock status, and sourcing information for: 503B4-91-2
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-209-2028

Item Name Code

14218

Assigment Date

01/01/1963 (63 years ago)

0.692 inches nominal outside diameter, 0.036 inches nominal material thickness, cadmium and chromate overall surface treatment, copper alloy overall material, 0.383 inches minimum and 0.398 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: 0.383 inches minimum and 0.398 inches maximum
Outside Diameter: 0.692 inches nominal
Material Thickness: 0.036 inches nominal
Material: copper alloy overall
Surface Treatment: cadmium and chromate overall
Style Designator: flat internal teeth
Nondefinitive Spec/Std Data: a type
Departure From Cited Document: as modified by surface finish

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5310-00-508-7678	No Name Available	01/02/1975

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
12Z3010-31	Lock Washer
503B4-91-2	Lock Washer
904701-07	Lock Washer
AN936A616B	Lock Washer

FAQs

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

What is the FSCG of the NSN 5310-00-209-2028?

The FSCG of the NSN 5310-00-209-2028 is 5310

Does the NSN 5310-00-209-2028 have a Schedule B code assigned?

Yes, the Schedule B code is 7415210000

Does NSN 5310-00-209-2028 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 5310-00-209-2028 contain precious materials?

Precious metal content is unknown

Does NSN 5310-00-209-2028 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 5310-00-209-2028 was assigned to the Federal Catalog?

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