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Technical Data Sheet
R6557-22 ✓ 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 body_diameter: 4.062 INCHES MAXIMUM IN, overall_width: 5.250 INCHES NOMINAL IN, terminal_type: CONNECTOR, RECEPTACLE, overall_height: 4.094 INCHES MAXIMUM IN, overall_length: 5.250 INCHES NOMINAL IN, mounting_method: BRACKET(S) AND UNTHREADED HOLE(S). This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5930-00-503-4490, 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
R6557-22
NSN: 5930-00-503-4490
FSC: 5930
CAGE: 02750 — EATON AEROSPACE LLC DBA EATON INOAC DIV FLUID & ELECTRICAL DISTRIBUTION (USA)
SPECIFICATIONS
body_diameter4.062 INCHES MAXIMUM IN
overall_width5.250 INCHES NOMINAL IN
terminal_typeCONNECTOR, RECEPTACLE
overall_height4.094 INCHES MAXIMUM IN
overall_length5.250 INCHES NOMINAL IN
mounting_methodBRACKET(S) AND UNTHREADED HOLE(S)
style_designatorCYLINDRICAL W/LUGS
features_providedELECTRICAL BOX CONNECTOR
nominal_thread_size0.250 INCHES SINGLE PRESSURE CONNECTION IN
pressure_switch_typeDIFFERENTIAL
contact_action_stimulusDECREASE
pressure_connector_typePLAIN, THREADED INTERNAL ALL CONNECTIONS
NSN5930-00-503-4490
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SWITCH,PRESSURE TITLE COMPONENT PN R6557-22 MFR SWITCH,PRESSURE
KEY FEATURES
NOMINAL THREAD SIZE: 0.250 INCHES SINGLE PRESSURE CONNECTION IN
MOUNTING FACILITY CIRCLE RADIUS: 2.312 INCHES NOMINAL IN
NONPILE-UP CONTACT ARRANGEMENT: 2 POLE, DOUBLE THROW, ONE POSITION MOMENTARY
FEATURES PROVIDED: ELECTRICAL BOX CONNECTOR
STYLE DESIGNATOR: CYLINDRICAL W/LUGS
UNTHREADED MOUNTING HOLE DIAMETER: 0.190 INCHES NOMINAL IN
MEDIA FOR WHICH DESIGNED: GAS OR LIQUID
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD SIZE0.250 INCHES SINGLE PRESSURE CONNECTION IN
MOUNTING FACILITY CIRCLE RADIUS2.312 INCHES NOMINAL IN
NONPILE-UP CONTACT ARRANGEMENT2 POLE, DOUBLE THROW, ONE POSITION MOMENTARY
FEATURES PROVIDEDELECTRICAL BOX CONNECTOR
STYLE DESIGNATORCYLINDRICAL W/LUGS
UNTHREADED MOUNTING HOLE DIAMETER0.190 INCHES NOMINAL IN
OVERALL WIDTH5.250 INCHES NOMINAL IN
MEDIA FOR WHICH DESIGNEDGAS OR LIQUID
PRESSURE CONNECTOR TYPEPLAIN, THREADED INTERNAL ALL CONNECTIONS
MOUNTING FACILITY PATTERNTHREE POSITION CIRCULAR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
30-030Interchangeable
interchangeable cross-reference
interchangeable
323-020-124Interchangeable
interchangeable cross-reference
interchangeable
C280AEP100KInterchangeable
interchangeable cross-reference
interchangeable
07-613437Interchangeable
interchangeable cross-reference
interchangeable
10539M3Interchangeable
interchangeable cross-reference
interchangeable
007613437Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is R6557-22?
R6557-22 is a SWITCH,PRESSURE.
What parts can replace R6557-22?
There are 21 known substitutes for R6557-22: 30-030, 323-020-124, C280AEP100K and 18 more. Substitute compatibility should be verified for your specific system.
What is the NSN for R6557-22?
R6557-22 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5930-00-503-4490. This indicates validated use in U.S. government and defense supply chains.
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