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PartsTable / COMPONENT / FES191B
FES191B ✓ 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 thread_class: 3B SINGLE PRESSURE CONNECTION, body_diameter: 3.000 INCHES NOMINAL IN, overall_width: 3.625 INCHES NOMINAL IN, terminal_type: CONNECTOR, RECEPTACLE, overall_length: 3.750 INCHES MAXIMUM IN, proof_pressure: 50.00 POUNDS PER SQUARE INCH LBS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5930-00-503-2860, 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
FES191B
NSN: 5930-00-503-2860
FSC: 5930
CAGE: 89446 — HILLER AIRCRAFT CORPORATION (USA)
SPECIFICATIONS
thread_class3B SINGLE PRESSURE CONNECTION
body_diameter3.000 INCHES NOMINAL IN
overall_width3.625 INCHES NOMINAL IN
terminal_typeCONNECTOR, RECEPTACLE
overall_length3.750 INCHES MAXIMUM IN
proof_pressure50.00 POUNDS PER SQUARE INCH LBS
mounting_methodBRACKET(S) AND UNTHREADED HOLE(S)
style_designatorCYLINDRICAL W/MOUNTING LUGS
nominal_thread_size0.438 INCHES SINGLE PRESSURE CONNECTION IN
pressure_switch_typeGAGE
contact_adjustabilityDEACTUATION POINT NOT ADJUSTABLE AND ACTUATION POINT NOT ADJUSTABLE
operating_temp_rating-65.0 FAHRENHEIT MINIMUM AND 160.0 FAHRENHEIT MAXIMUM DEGF
NSN5930-00-503-2860
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SWITCH,PRESSURE TITLE COMPONENT PN FES191B MFR SWITCH,PRESSURE
KEY FEATURES
•
PRESSURE SWITCH TYPE: GAGE
•
MOUNTING FACILITY PATTERN: TWO POSITION IN-LINE
•
TERMINAL TYPE: CONNECTOR, RECEPTACLE
•
THREAD QUANTITY PER INCH: 20 SINGLE PRESSURE CONNECTION
•
NOMINAL THREAD SIZE: 0.438 INCHES SINGLE PRESSURE CONNECTION IN
•
STYLE DESIGNATOR: CYLINDRICAL W/MOUNTING LUGS
•
MEDIA FOR WHICH DESIGNED: LIQUID
•
CONTACT STIMULUS RATING: 18.50 ACTUATION POINT NOMINAL POUNDS PER SQUARE INCH AND 17.50 DEACTUATION POINT NOMINAL POUNDS PER SQUARE INCH AND 1.00 DIFFERENTIAL POINT NOMINAL POUNDS PER SQUARE INCH
TECHNICAL CHARACTERISTICS (FLIS)
PRESSURE SWITCH TYPEGAGE
MOUNTING FACILITY PATTERNTWO POSITION IN-LINE
TERMINAL TYPECONNECTOR, RECEPTACLE
THREAD QUANTITY PER INCH20 SINGLE PRESSURE CONNECTION
NOMINAL THREAD SIZE0.438 INCHES SINGLE PRESSURE CONNECTION IN
STYLE DESIGNATORCYLINDRICAL W/MOUNTING LUGS
MEDIA FOR WHICH DESIGNEDLIQUID
CONTACT STIMULUS RATING18.50 ACTUATION POINT NOMINAL POUNDS PER SQUARE INCH AND 17.50 DEACTUATION POINT NOMINAL POUNDS PER SQUARE INCH AND 1.00 DIFFERENTIAL POINT NOMINAL POUNDS PER SQUARE INCH
BODY DIAMETER3.000 INCHES NOMINAL IN
OVERALL LENGTH3.750 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
1344Interchangeable
interchangeable cross-reference
interchangeable
01221Interchangeable
interchangeable cross-reference
interchangeable
01344Interchangeable
interchangeable cross-reference
interchangeable
8517PC25Interchangeable
interchangeable cross-reference
interchangeable
1344-1Interchangeable
interchangeable cross-reference
interchangeable
AS50861/2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is FES191B?
FES191B is a SWITCH,PRESSURE.
What parts can replace FES191B?
There are 17 known substitutes for FES191B: 1344, 01221, 01344 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for FES191B?
FES191B is cataloged in the Federal Logistics Information System (FLIS) under NSN 5930-00-503-2860. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026