MS9768-12

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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-059-5228

Item Name Code

15933

Assigment Date

02/12/1972 (54 years ago)

A washer of any peripheral shape having a centrally located hole. Both bearing surfaces are parallel and flat, but one or both of the bearing surfaces must be broken by a counterbore, countersink, or similarly shaped recess. The thickness must not exceed 25 per cent of the outside diameter or the largest outside dimension. The maximum limit of the tolerance or range applied to the thickness and/or largest outside dimension must be used to determine compliance. Excludes:washer, concave, retainer, packing, and thrust type washers. See also spacer, sleeve; and spacer, stepped.

0.865 inches minimum and 0.885 inches maximum outside diameter, 0.107 inches minimum and 0.117 inches maximum material thickness, 0.435 inches nominal recess diameter, 0.378 inches minimum and 0.388 inches maximum hole diameter, 29.0 rockwell c minimum and 39.0 rockwell c maximum hardness rating

Product Characteristics

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

Hole Diameter: 0.378 inches minimum and 0.388 inches maximum
Outside Diameter: 0.865 inches minimum and 0.885 inches maximum
Recess Diameter: 0.435 inches nominal
Material Thickness: 0.107 inches minimum and 0.117 inches maximum
Hardness Rating: 29.0 rockwell c minimum and 39.0 rockwell c maximum
Top Recess Diameter: 0.435 inches nominal
Bottom Recess Angle: 90.000 degrees nominal
Top Recess Angle: 90.000 degrees nominal
Bottom Recess Diameter: 0.435 inches nominal
Surface Finish: 63.0 microinches bottom
Surface Finish: 63.0 microinches top
Material Document And Classification: ams 5525 assn std 1st material response or ams 5518 assn std 2nd material response overall
Style Designator: recessed both sides

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
10437719	Recessed Washer
5310PL0712488	Recessed Washer
MS9768-12	Recessed Washer

FAQs

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

What is the FSCG of the NSN 5310-00-059-5228?

The FSCG of the NSN 5310-00-059-5228 is 5310

Does the NSN 5310-00-059-5228 have a Schedule B code assigned?

Yes, the Schedule B code is 7318220000

Does NSN 5310-00-059-5228 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 5310-00-059-5228 contain precious materials?

Precious metal content is unknown

Does NSN 5310-00-059-5228 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 5310-00-059-5228 was assigned to the Federal Catalog?

It was assigned 54 years ago, on Sat, Feb 12, 1972