MS21206C8

View detailed technical data, stock status, and sourcing information for: MS21206C8
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-057-3626

Item Name Code

15933

Assigment Date

03/11/1978 (48 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.

0.888 inches minimum and 0.898 inches maximum outside diameter, 0.071 inches minimum and 0.085 inches maximum material thickness, 0.501 inches minimum and 0.505 inches maximum hole diameter, 38.0 rockwell c minimum and 45.0 rockwell c maximum hardness rating, 0.622 inches minimum and 0.632 inches maximum recess 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: 0.501 inches minimum and 0.505 inches maximum
Outside Diameter: 0.888 inches minimum and 0.898 inches maximum
Recess Diameter: 0.622 inches minimum and 0.632 inches maximum
Material Thickness: 0.071 inches minimum and 0.085 inches maximum
Hardness Rating: 38.0 rockwell c minimum and 45.0 rockwell c maximum
Recess Angle: 90.0 degrees nominal
Material: steel comp 4130 overall
Material Document And Classification: mil-s-658 mil spec 1st material response or mil-s-18729 mil spec 2nd material response overall
Surface Treatment: cadmium overall
Surface Treatment Document And Classification: qq-p-416,ty 2,cl 2 fed spec single treatment response overall
Style Designator: recessed

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
10122064	Recessed Washer
5310PL0744848	Recessed Washer
MS21206-C8	Recessed Washer
MS21206C8	Recessed Washer

FAQs

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

What is the FSCG of the NSN 5310-01-057-3626?

The FSCG of the NSN 5310-01-057-3626 is 5310

Does the NSN 5310-01-057-3626 have a Schedule B code assigned?

Yes, the Schedule B code is 7318220000

Does NSN 5310-01-057-3626 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 5310-01-057-3626 contain precious materials?

Precious metal content is unknown

Does NSN 5310-01-057-3626 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 5310-01-057-3626 was assigned to the Federal Catalog?

It was assigned 48 years ago, on Sat, Mar 11, 1978