12W63-64C

View detailed technical data, stock status, and sourcing information for: 12W63-64C
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-467-3178

Item Name Code

15937

Assigment Date

06/03/1974 (52 years ago)

A washer, round in shape, and having a centrally located hole. Its two flat parallel bearing surfaces are divided or cut along the radius, leaving a cleft, fissure, or cutaway portion across the rim whch extends from the outer circumference to the washer hole but which is never as large as the washer hole diameter. Excludes:washer (1), lock.

4.177 inches minimum and 4.183 inches maximum hole diameter, 4.520 inches minimum and 4.525 inches maximum outside diameter, 0.046 inches minimum and 0.053 inches maximum material thickness, steel comp 631 overall material, 0.029 inches minimum and 0.034 inches maximum distance across split opening

Product Characteristics

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

Hole Diameter: 4.177 inches minimum and 4.183 inches maximum
Outside Diameter: 4.520 inches minimum and 4.525 inches maximum
Distance Across Split Opening: 0.029 inches minimum and 0.034 inches maximum
Material Thickness: 0.046 inches minimum and 0.053 inches maximum
Material: steel comp 631 overall
Material Document And Classification: mil-s-25043 mil spec single material response overall
Surface Treatment: passivate overall
Surface Treatment Document And Classification: aq-p-35 fed spec single treatment response overall
Style Designator: split

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
12W63-64C	Split Washer
6375-64-9	Split Washer
7D0256-4	Split Washer

FAQs

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

What is the FSCG of the NSN 5310-00-467-3178?

The FSCG of the NSN 5310-00-467-3178 is 5310

Does the NSN 5310-00-467-3178 have a Schedule B code assigned?

Yes, the Schedule B code is 7318220000

Does NSN 5310-00-467-3178 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 5310-00-467-3178 contain precious materials?

Precious metal content is unknown

Does NSN 5310-00-467-3178 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 5310-00-467-3178 was assigned to the Federal Catalog?

It was assigned 52 years ago, on Mon, Jun 3, 1974