Model: 642DHM

Pressure Switch

Properties:

Inside Diameter
0.250 inches all connections
Overall Length
4.300 inches
Overall Height
2.620 inches
Overall Width
2.620 inches
Body Length
3.400 inches
Unthreaded Mounting Hole Diameter
0.225 inches
Longest Horizontal Distance Between Mounting Centers
2.125 inches
Longest Vertical Distance Between Mounting Centers
2.125 inches
Pressure Switch Type
Differential
Mounting Method
Unthreaded hole
Features Provided
Hermetically sealed case
Thready Qty Per Inch (tpi)
18 all pressure connection
Contact Action Stimulus
Increase
Proof Pressure
250.00 pounds per square inch
Thread Size
0.250 inches single pressure connection
Mounting Facility Pattern
Four position rectangular
Nonpile-up Contact Arrangement
2 pole, double throw, one position momentary
Terminal Type
Wire lead
Contact Load Current Rating
5.0 amperes resistive load first voltage
Contact Load Current Rating
5.0 amperes resistive load second voltage
Contact Adjustability
Actuation point not adjustable
Contact Stimulus Rating
1.00 actuation point pounds per square inch and 90.00 actuation point pounds per square inch
Contact Voltage Rating In Volts
125.0 ac at sea level first voltage
Contact Voltage Rating In Volts
28.0 dc at sea level second voltage
Pressure Connector Type
Plain, threaded internal all connections
Media For Which Designed
Gas or liquid
Style Designator
Rectangular w/bracket
Thread Series Designator
Npt all pressure connection
NSN
5930-01-010-7639
Part Number
642DHM
Description
Switch,pressure
CAGE
09049

A switch which is actuated by changes in pressure of any gas or liquid or by changes in a vacuum acting upon its sensing element. Excludes baroswitch; switch, pressure-thermostatic; and switch, sensitive.

Part 642DHM NSN 5930-01-010-7639

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
00206
FIIG:
A048B0
Concept No.:
1
App. Key:
D
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: 8536509065
  • SITC: 77255
  • End Use: Electric apparatus
  • NAICS: 335931
  • USDA: 1

Freight Class: Switches, for a voltage not exceeding 1000 volts, nesoi

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