Model: 21490-2

Thermostatic Switch
Description:

2a single threaded bushing thread class, 0.312 inches single threaded bushing thread length, 2.733 inches overall length, 0.660 inches body diameter.

Properties:

Thread Class
2a single threaded bushing
Thread Length
0.312 inches single threaded bushing
Overall Length
Between 2.733 inches and 2.783 inches
Body Diameter
0.660 inches
Body Length
Between 1.745 inches and 1.755 inches
Bulb Length
Between 1.745 inches and 1.755 inches
Bulb Diameter
0.660 inches
Tempurature Sensing Element Type
Bulb
Width Across Flats
Between 0.990 inches and 1.010 inches
Mounting Method
Threaded bushing
Features Provided
Hermetically sealed case
Thready Qty Per Inch (tpi)
14 single threaded bushing
Contact Action Stimulus
Increase
Thread Size
0.875 inches single threaded bushing
Nonpile-up Contact Arrangement
1 pole, single throw, normally closed, momentary action
Terminal Type
Connector, receptacle
Contact Load Current Rating
2.0 amperes resistive load first voltage
Contact Load Current Rating
4.0 amperes resistive load second voltage
Contact Load Current Rating
6.0 amperes resistive load third voltage
Contact Adjustability
Deactuation point not adjustable and actuation point not adjustable
Contact Stimulus Rating
164.00 actuation point degrees fahrenheit and 174.00 actuation point degrees fahrenheit and 8.00 differential point degrees fahrenheit and 10.00 differential point degrees fahrenheit
Contact Voltage Rating In Volts
125.0 ac at sea level second voltage
Contact Voltage Rating In Volts
250.0 ac at sea level first voltage
Contact Voltage Rating In Volts
30.0 dc at sea level third voltage
Frequency In Hertz
60.0 single voltage
Media For Which Designed
Gas or liquid
Style Designator
Cylindrical w/flange
Thread Series Designator
Unf single threaded bushing
NSN
5930-00-055-9231
Part Number
21490-2
Description
Switch,thermostatic
CAGE
82647

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).

Part 21490-2 NSN 5930-00-055-9231

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
00451
FIIG:
A048B0
Concept No.:
1
App. Key:
F
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
P
PMIC:
U
ESD:
ESD:
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
--
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
Q
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
061300
UFC:
34410
LTL:
77.5
LCL:
--
WCC:
658
TCC:
Z
SHC:
9
ACC:
Instruments/Radio

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Schedule B and Export
  • Schedule B: 9032100000
  • SITC: 87461
  • End Use: Measuring, testing, control instruments
  • NAICS: 334512
  • USDA: 1

Freight Class: Thermostats

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