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Technical Data Sheet
9978 ✓ 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 CLUTCH ASSEMBLY,FRICTION is a the manufacturer industrial component. Key specifications include phase: SINGLE, length: 10.730 INCHES NOMINAL IN, material: STEEL COMP 347 SHEATH, body_style: TUBE ELEMENT, DOUBLE TERMINALS, body_width: 0.402 INCHES MAXIMUM IN, body_length: 1.450 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5955-00-499-7324, 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
9978
NSN: 5955-00-499-7324
FSC: 5955
CAGE: 00136 — MICROSEMI CORP. - HIGH PERFORMANCE TIMING DBA VECTRON INTERNATIONAL- CANCELLED (USA)
SPECIFICATIONS
phaseSINGLE
length10.730 INCHES NOMINAL IN
materialSTEEL COMP 347 SHEATH
body_styleTUBE ELEMENT, DOUBLE TERMINALS
body_width0.402 INCHES MAXIMUM IN
body_length1.450 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN
heat_quantity1
overall_width3.9 INCHES NOMINAL IN
body_thickness0.150 INCHES MAXIMUM IN
inclosure_typeENCASED
overall_height2.75 INCHES NOMINAL IN
overall_length7.43 INCHES NOMINAL IN
NSN5955-00-499-7324
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CLUTCH ASSEMBLY,FRICTION TITLE COMPONENT PN 9978 MFR CLUTCH ASSEMBLY,FRICTI
KEY FEATURES
MATERIAL: GLASS COVER HOLDER
SPECIFIED FREQUENCY: 34.530 MEGAHERTZ
BODY THICKNESS: 0.150 INCHES MAXIMUM IN
SHUNT CAPACITANCE IN PICOFARADS: 7.0 MAXIMUM
OVERALL THICKNESS: 0.183 INCHES MAXIMUM IN
FREQUENCY TOLERANCE FOR OPERATING TEMP IN PERCENT: -0.0025 TO 0.0025 AND -0.0050 TO 0.0050
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALGLASS COVER HOLDER
SPECIFIED FREQUENCY34.530 MEGAHERTZ
OVERALL LENGTH0.530 INCHES MAXIMUM IN
BODY THICKNESS0.150 INCHES MAXIMUM IN
SHUNT CAPACITANCE IN PICOFARADS7.0 MAXIMUM
OVERALL THICKNESS0.183 INCHES MAXIMUM IN
OVERALL WIDTH0.435 INCHES MAXIMUM IN
FREQUENCY TOLERANCE FOR OPERATING TEMP IN PERCENT-0.0025 TO 0.0025 AND -0.0050 TO 0.0050
TERMINAL LENGTH1.500 INCHES MINIMUM IN
OPERATING TEMP RANGE-40.0 TO 65.0 CELSIUS DEGC
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
9978Interchangeable
interchangeable cross-reference
interchangeable
D9978Interchangeable
interchangeable cross-reference
interchangeable
D-99778Interchangeable
interchangeable cross-reference
interchangeable
2HN063F-13Interchangeable
interchangeable cross-reference
interchangeable
SM-A-878218Interchangeable
interchangeable cross-reference
interchangeable
2HN063B-13Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 9978?
9978 is a CLUTCH ASSEMBLY,FRICTION.
What parts can replace 9978?
There are 11 known substitutes for 9978: 9978, D9978, D-99778 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 9978?
9978 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5955-00-499-7324. This indicates validated use in U.S. government and defense supply chains.
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