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Technical Data Sheet
543549 ✓ 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 SPRING,HELICAL,COMPRESSION is a the manufacturer industrial component. Key specifications include case_style: RECESSED, seal_width: 0.358 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN, outside_diameter: 3.005 INCHES NOMINAL IN, surface_treatment: PLASTIC CASE, housing_bore_diameter: 3.000 INCHES NOMINAL IN, sealing_element_style: ANGULAR-OPPOSED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5360-00-738-9210, 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
543549
NSN: 5360-00-738-9210
FSC: 5360
CAGE: 45934 — ONTIC ENGINEERING & MANUFACTURING, INC DBA ONTIC US (USA)
SPECIFICATIONS
case_styleRECESSED
seal_width0.358 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
outside_diameter3.005 INCHES NOMINAL IN
surface_treatmentPLASTIC CASE
housing_bore_diameter3.000 INCHES NOMINAL IN
sealing_element_styleANGULAR-OPPOSED
accommodated_shaft_diameter2.250 INCHES NOMINAL IN
material_document_and_classification66 FED STD 2ND MATERIAL RESPONSE CASE
accommodated_shaft_maximum_rated_speed3600 FEET PER MINUTE FT
NSN5360-00-738-9210
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SPRING,HELICAL,COMPRESSION TITLE COMPONENT PN 543549 MFR SPRING,HELICAL,COMPRES
KEY FEATURES
INSIDE DIAMETER: 0.382 INCHES NOMINAL IN
END STYLE: SPRING END,SQUARED AND GROUND BOTH ENDS
SPRING SOLID LENGTH: 0.720 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATION: HS261,UNITED AIRCRAFT CORP MFR REF SINGLE MATERIAL RESPONSE OVERALL
SPRING FREE LENGTH: 1.075 INCHES NOMINAL IN
SPRING DEFLECTION RATE: 6.000 POUNDS PER INCH NOMINAL LBS
STYLE DESIGNATOR: CYLINDRICAL
LOAD RATING: 55.000 POUNDS NOMINAL LBS
TECHNICAL CHARACTERISTICS (FLIS)
INSIDE DIAMETER0.382 INCHES NOMINAL IN
END STYLESPRING END,SQUARED AND GROUND BOTH ENDS
SPRING SOLID LENGTH0.720 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONHS261,UNITED AIRCRAFT CORP MFR REF SINGLE MATERIAL RESPONSE OVERALL
SPRING FREE LENGTH1.075 INCHES NOMINAL IN
SPRING DEFLECTION RATE6.000 POUNDS PER INCH NOMINAL LBS
STYLE DESIGNATORCYLINDRICAL
LOAD RATING55.000 POUNDS NOMINAL LBS
COIL HELIX DIRECTIONRIGHT-HAND OR LEFT-HAND
MATERIALNICKEL ALLOY OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
AR 67942Interchangeable
interchangeable cross-reference
interchangeable
545162Interchangeable
interchangeable cross-reference
interchangeable
543549Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 543549?
543549 is a SPRING,HELICAL,COMPRESSION.
What parts can replace 543549?
There are 3 known substitutes for 543549: AR 67942, 545162, 543549. Substitute compatibility should be verified for your specific system.
What is the NSN for 543549?
543549 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5360-00-738-9210. This indicates validated use in U.S. government and defense supply chains.
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