21S5

View detailed technical data, stock status, and sourcing information for: 21S5
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Federal Supply Group

Electrical and Electronic Equipment Components

Federal Supply Classification

5930 Switches

National Stock Number

5930-00-244-8959

Item Name Code

00451

Assigment Date

01/05/1972 (54 years ago)

explosion proof hazardous locations/environmental protection, 0.660 inches nominal body diameter, 0.305 inches nominal body height, 0.603 inches nominal overall height, 1.125 inches nominal overall length

Product Characteristics

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

Hazardous Locations/Environmental Protection: explosion proof
Overall Length: 1.125 inches nominal
Overall Height: 0.603 inches nominal
Body Diameter: 0.660 inches nominal
Body Height: 0.305 inches nominal
Unthreaded Mounting Hole Diameter: 0.147 inches nominal
Distance Between Mounting Facility Centers: 0.875 inches nominal
Temp Sensing Element Type: internal sensor
Mounting Method: bracket and unthreaded hole
Features Provided: hermetically sealed case
Contact Action Stimulus: increase
Mounting Facility Pattern: two position in-line
Nonpile-Up Contact Arrangement: 1 pole, single throw, normally open, momentary action
Terminal Type: tab, solder lug
Contact Load Current Rating: 5.0 amperes resistive load single voltage
Contact Adjustability: deactuation point not adjustable and actuation point not adjustable
Contact Stimulus Rating: 77.00 actuation point nominal degrees fahrenheit and 57.00 deactuation point nominal degrees fahrenheit
Contact Voltage Rating In Volts: 125.0 ac at sea level single voltage
Frequency In Hertz: 60.0 single voltage
Media For Which Designed: gas or liquid
Style Designator: disc w/flange

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
21S5	Thermostatic Switch
4210E31	Thermostatic Switch

FAQs

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

What is the FSCG of the NSN 5930-00-244-8959?

The FSCG of the NSN 5930-00-244-8959 is 5930

Does the NSN 5930-00-244-8959 have a Schedule B code assigned?

Yes, the Schedule B code is 9032100000

Does NSN 5930-00-244-8959 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 5930-00-244-8959 contain precious materials?

Precious metal content is unknown

Does NSN 5930-00-244-8959 contain hazardous materials?

Indicates there is no information in the hmirs. The nsn is in a fsc in table ii of fed std 313 and a msds may be required by the user. The requirement for a msds is dependent on a hazard determination of the supplier or the intended end use of item.

When the NSN 5930-00-244-8959 was assigned to the Federal Catalog?

It was assigned 54 years ago, on Wed, Jan 5, 1972