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HD654-99999 ✓ 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 HD654-99999 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6645-01-057-7987, 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
HD654-99999
NSN: 6645-01-057-7987
FSC: 6645
CAGE: 28281 — DE JUR-AMSCO CORP (USA)
SPECIFICATIONS
Part NumberHD654-99999
NSN6645-01-057-7987
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available HD654-99999 TITLE COMPONENT PN HD654-99999 MFR HD654-99999
KEY FEATURES
•
TERMINAL QUANTITY: 2
•
TERMINAL TYPE: SOLDER
•
MOUNTING FLANGE DIAMETER: 3.500 INCHES MAXIMUM IN
•
ELECTRICAL MOVEMENT TYPE: SYNCHRONOUS MOTOR
•
INDICATOR TYPE: DRUM REGISTER
•
MEASUREMENT UNIT: HOURS
•
UNIT TYPE: MOUNTED
•
VOLTAGE RATING: 120.0 VOLTS NOMINAL
TECHNICAL CHARACTERISTICS (FLIS)
TERMINAL QUANTITY2
TERMINAL TYPESOLDER
MOUNTING FLANGE DIAMETER3.500 INCHES MAXIMUM IN
ELECTRICAL MOVEMENT TYPESYNCHRONOUS MOTOR
INDICATOR TYPEDRUM REGISTER
MEASUREMENT UNITHOURS
UNIT TYPEMOUNTED
VOLTAGE RATING120.0 VOLTS NOMINAL
SMALLEST INCREMENT INDICATED0.10
MOUNTING METHODFLUSH
VERIFIED SUBSTITUTES & CROSS-REFERENCES 35
M3971/1-5-SInterchangeable
interchangeable cross-reference
interchangeable
M3971/1-5Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-3971EInterchangeable
interchangeable cross-reference
interchangeable
362312Interchangeable
interchangeable cross-reference
interchangeable
632EInterchangeable
interchangeable cross-reference
interchangeable
M3971/2-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is HD654-99999?
HD654-99999 is a HD654-99999.
What parts can replace HD654-99999?
There are 35 known substitutes for HD654-99999: M3971/1-5-S, M3971/1-5, MIL-DTL-3971E and 32 more. Substitute compatibility should be verified for your specific system.
Is HD654-99999 still available?
HD654-99999 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026