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Technical Data Sheet
903991-2 ✓ Verified by PartsTable
· COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The SWITCH,PRESSURE is a the manufacturer industrial component. Key specifications include overall_width: 4.500 INCHES NOMINAL IN, terminal_type: SCREW, overall_height: 3.500 INCHES NOMINAL IN, overall_length: 5.438 INCHES NOMINAL IN, mounting_method: FLANGE AND UNTHREADED HOLE(S), style_designator: CYLINDRICAL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5930-01-270-6139, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
903991-2
NSN: 5930-01-270-6139
FSC: 5930
CAGE: 409BB — NAVANTIA - PROPULSION Y ENERGIA MOTORES - CARTAGENA (ESP)
SPECIFICATIONS
overall_width4.500 INCHES NOMINAL IN
terminal_typeSCREW
overall_height3.500 INCHES NOMINAL IN
overall_length5.438 INCHES NOMINAL IN
mounting_methodFLANGE AND UNTHREADED HOLE(S)
style_designatorCYLINDRICAL
features_providedELECTRICAL ACCESS PORT
nominal_thread_size0.125 INCHES ALL PRESSURE CONNECTION IN
pressure_switch_typeDIFFERENTIAL
contact_adjustabilityACTUATION POINT ADJUSTABLE
operating_temp_rating-40.0 FAHRENHEIT MINIMUM AND 140.0 FAHRENHEIT MAXIMUM DEGF
contact_action_stimulusINCREASE
NSN5930-01-270-6139
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SWITCH,PRESSURE TITLE COMPONENT PN 903991-2 MFR SWITCH,PRESSURE
KEY FEATURES
THREAD SERIES DESIGNATOR: NPT ALL PRESSURE CONNECTION
CONTACT LOAD CURRENT RATING: 15.0 AMPERES RESISTIVE LOAD SECOND VOLTAGE
CONTACT ADJUSTMENT RANGE: +1.40 TO 5.50 ACTUATION POINT POUNDS PER SQUARE INCH
TERMINAL TYPE: SCREW
UNTHREADED MOUNTING HOLE DIAMETER: 0.266 INCHES NOMINAL IN
MOUNTING FACILITY PATTERN: TWO POSITION IN-LINE
CONTACT VOLTAGE RATING IN VOLTS: 125.0 AC AT SEA LEVEL FIRST VOLTAGE
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIES DESIGNATORNPT ALL PRESSURE CONNECTION
CONTACT LOAD CURRENT RATING15.0 AMPERES RESISTIVE LOAD SECOND VOLTAGE
CONTACT ADJUSTMENT RANGE+1.40 TO 5.50 ACTUATION POINT POUNDS PER SQUARE INCH
TERMINAL TYPESCREW
OVERALL WIDTH4.500 INCHES NOMINAL IN
UNTHREADED MOUNTING HOLE DIAMETER0.266 INCHES NOMINAL IN
MOUNTING FACILITY PATTERNTWO POSITION IN-LINE
CONTACT VOLTAGE RATING IN VOLTS125.0 AC AT SEA LEVEL FIRST VOLTAGE
CONTACT LOAD CURRENT RATING15.0 AMPERES RESISTIVE LOAD FIRST VOLTAGE
NOMINAL THREAD SIZE0.125 INCHES ALL PRESSURE CONNECTION IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
1AC24Interchangeable
interchangeable cross-reference
interchangeable
96-195-05-1Interchangeable
interchangeable cross-reference
interchangeable
19505Interchangeable
interchangeable cross-reference
interchangeable
B197570Interchangeable
interchangeable cross-reference
interchangeable
GA54-2Interchangeable
interchangeable cross-reference
interchangeable
B107.22Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 903991-2?
903991-2 is a SWITCH,PRESSURE.
What parts can replace 903991-2?
There are 15 known substitutes for 903991-2: 1AC24, 96-195-05-1, 19505 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 903991-2?
903991-2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5930-01-270-6139. This indicates validated use in U.S. government and defense supply chains.
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