21391

21391 Thermostatic Switch

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Datasheet. 21391 specification

Thread Class
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.

3a single threaded bushing

Overall Length
The dimension measured along the longitudinal axis with terminated points at the extreme ends of the item.

1.800in. ⁓1-13/16"

Body Length
A measurement of the longest dimension of the body,in distinction from width.

1.031in.

Temp Sensing Element Type
Indicates the type of sensor or transducer used in the item to convert temperature changes to switch actuating force.

internal sensor

Width Across Flats
The shortest straight line between flats,perpendicular to the height.

1.375in. ⁓1-3/8"

Operating Temp Rating
The temperature at which the item operates.

320.0 deg fahrenheit

Mounting Method
The means of attaching the item.

threaded bushing

Thread Quantity Per Inch
The number of threads on the item per linear inch measured on a line parallel to the thread axis.

12 single threaded bushing

Contact Action Stimulus
An indication of whether the initial action of the contacts occurs as the result of an increase or decrease in stimulus.

increase

Nominal Thread Size
A designation that is used for the purpose of general identification of the thread.

1.0625in. single threaded bushing ⁓1-5/64"

Nonpile-up Contact Arrangement
The designation that identifies the electrical configuration of a nonpile-up contact group including the number of switching poles or forms.

1 pole, single throw, normally closed, momentary action

Terminal Type
Indicates the type of terminal for providing electrical connection to the item.

connector, receptacle

Contact Load Current Rating
The amount of current that the contacts are rated to make or break with a specified load.

2.0 amperes resistive load second voltage

Contact Load Current Rating
The amount of current that the contacts are rated to make or break with a specified load.

1.0 amperes resistive load third voltage

Contact Load Current Rating
The amount of current that the contacts are rated to make or break with a specified load.

5.0 amperes resistive load first voltage

Contact Load Current Rating
The amount of current that the contacts are rated to make or break with a specified load.

5.0 amperes resistive load fourth voltage

Contact Adjustability
The adjustability of the contact.

deactuation point not adjustable and actuation point not adjustable

Contact Stimulus Rating
The rating of the stimulus required to actuate and/or deactuate the contact(s).

180.00 actuation point degrees fahrenheit and 200.00 deactuation point degrees fahrenheit

Contact Voltage Rating In Volts
The voltage for which the contact(s) is rated at sea level or at a specified altitude,expressed in volts.

125.0 ac at sea level second voltage

Contact Voltage Rating In Volts
The voltage for which the contact(s) is rated at sea level or at a specified altitude,expressed in volts.

250.0 ac at sea level third voltage

Contact Voltage Rating In Volts
The voltage for which the contact(s) is rated at sea level or at a specified altitude,expressed in volts.

30.0 ac at sea level first voltage

Contact Voltage Rating In Volts
The voltage for which the contact(s) is rated at sea level or at a specified altitude,expressed in volts.

30.0 dc at sea level fourth voltage

Media For Which Designed
The type of media for which the item is designed.

gas or liquid

Precious Material And Location
An indication of the precious material and its location in the item.

contact surfaces gold

Precious Material
Identification of the precious material contained in the item.

gold

Style Designator
The style designation indicating the configuration that most nearly corresponds to the appearance of the item.

plug

Thread Series Designator
A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.

un single threaded bushing

Answers.

What quantity is this sold in?

1EA

What class is the thread series?

Un single threaded bushing

What is the style?

Plug

What is the thread quantity per inch?

12 single threaded bushing

What is the thread class?

3a single threaded bushing

What is the NSN for 21391?

5930-00-844-8470

How is this classified for shipping?

Schedule B number: 9032100000
nmfc 061300
Thermostats

What's the federal classification of 21391?

FSC 5930 ⁓ Switches

Excluding switchgear.

NSN 5930-00-844-8470 SWITCH,THERMOSTATIC

un single threaded bushing thread series plug 12 single threaded bushing thread quantity per inch 1.800" overall length 3a single threaded bushing thread class

NIIN
008448470
NIIN Date
01/01/62
Schedule B
9032100000 
Name Code
00451
FIIG
A048B0
Item Weight
0.100lbs
Item Dimensions
--
QUP
Historical Price
$875.10 EA
DEMIL / ITAR
Uncontrolled item (Code A)
Hazmat
No hazard information available from HMIRS.
MSDS
N/A
Precious Metals
Contains gold
Enviromental
N/A
Electrostatic ESD & EMI
No ESD or EMI sensitivity

Other Part Numbers Parts with same form, fit, and function by other manufacturers

1. 117SCE242-1 Cage 26512

Major End Users Countries and entities

  • - Department of The Navy 
  • - Australia 
  • - Republic of Korea 
  • - Turkey 

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Shipping Information

Special Handling
Other or no special handling required (sh) 
LTL (less than a truck load rating)
77.5 
LCL (less than a car load rating)
Unknown
Special Cargo
No special type of cargo code applicable 
Air Freight (Minimum cargo door size required)
Shipment is not a consolidation and does not exceed 84 inches in any dimension. 
Customs Requirement Classification
Instruments/equipment/supplies for radio, communications, electrical, laboratory, etc. (includes signal corps) 
Commodity (for shipments via water)
Electrical appliances, small 
NMFC (national motor freight code)
061300 CIRCUIT BREAKER/SWITCH NOI 
UFC (universal freight code)
34410 

Similar by Design Other switchs with similar characteristics

Nothing similar to this part number was found in our inventory

21391 / Switch,thermostaticWhat is the formal definition of this item?

A switch that is actuated by changes in ambient temperature. excludes circuit breaker; control, temperature (as modified); fuse (as modified); protector, thermal-overload, electrical motor; relay, thermal; and thermostat, flow control. see also control, temperature (as modified) and regulator, temperature (as modified).