MS21299C6

View detailed technical data, stock status, and sourcing information for: MS21299C6
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-101-1856

Item Name Code

15933

Assigment Date

09/22/1980 (45 years ago)

"a device with means other than fuses for automatically opening the circuit in which it is installed when the current varies from the predetermined value for which the device is set. May include provisions for manual operation. At least one set of contacts must be in series with the actuating element(s). A combination of semiconductor and passive devices may be used in lieu of contacts. For automatically operated items in which the actuating (tripping) element and contacts are not in series, see relay (as modified). For items which are operated both manually and automatically but the actuating elements and contact are not in series, see relay-switch. Excludes:circuit breaker box and magneto "breaker" assemblies. See also switch (as modified); and controller."

39.0 rockwell c minimum and 45.0 rockwell c maximum hardness rating, 0.497 inches minimum and 0.507 inches maximum recess diameter, 0.702 inches minimum and 0.712 inches maximum outside diameter, 0.071 inches minimum and 0.085 inches maximum material thickness, 0.376 inches minimum and 0.380 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: 0.376 inches minimum and 0.380 inches maximum
Outside Diameter: 0.702 inches minimum and 0.712 inches maximum
Recess Diameter: 0.497 inches minimum and 0.507 inches maximum
Material Thickness: 0.071 inches minimum and 0.085 inches maximum
Hardness Rating: 39.0 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-6758 mil spec 1st material response and mil-s-18729 mil spec 2nd material response overall
Surface Treatment: cadmium overall
Surface Treatment Document And Classification: qq-p-416,type 2,class 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
MS21299-C6	Recessed Washer
MS21299C6	Recessed Washer

FAQs

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

What is the FSCG of the NSN 5310-01-101-1856?

The FSCG of the NSN 5310-01-101-1856 is 5310

Does the NSN 5310-01-101-1856 have a Schedule B code assigned?

Yes, the Schedule B code is 7318220000

Does NSN 5310-01-101-1856 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 5310-01-101-1856 contain precious materials?

Precious metal content is unknown

Does NSN 5310-01-101-1856 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 5310-01-101-1856 was assigned to the Federal Catalog?

It was assigned 45 years ago, on Mon, Sep 22, 1980