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Technical Data Sheet
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HE21H ✓ 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 HE21H is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6645-00-285-8781, 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
HE21H
NSN: 6645-00-285-8781
FSC: 6645
CAGE: 14907 — CRAMER CO DIVISION OF CHESTNUT GROUP INC (USA)
SPECIFICATIONS
Part NumberHE21H
NSN6645-00-285-8781
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available HE21H TITLE COMPONENT PN HE21H MFR HE21H
KEY FEATURES
•
MOVEMENT TYPE: ELECTRICAL
•
VOLTAGE RATING: 110.0 VOLTS NOMINAL
•
MOUNTING TYPE: PANEL
•
BACKGROUND COLOR: A/A
•
INDICATOR TYPE: DRUM REGISTER
•
OPERATING FREQUENCY: 60.0 HERTZ NOMINAL
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MOUNTING METHOD: FLUSH
•
MAXIMUM MEASUREMENT: 9999.90
TECHNICAL CHARACTERISTICS (FLIS)
MOVEMENT TYPEELECTRICAL
VOLTAGE RATING110.0 VOLTS NOMINAL
MOUNTING TYPEPANEL
BACKGROUND COLORA/A
INDICATOR TYPEDRUM REGISTER
OPERATING FREQUENCY60.0 HERTZ NOMINAL
MOUNTING METHODFLUSH
MAXIMUM MEASUREMENT9999.90
MEASUREMENT UNITHOURS
RESET FEATURENOT PROVIDED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
AEX255Interchangeable
interchangeable cross-reference
interchangeable
K42203P4Interchangeable
interchangeable cross-reference
interchangeable
D109Interchangeable
interchangeable cross-reference
interchangeable
40178REVAInterchangeable
Same NIIN cross-reference
interchangeable
630HInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is HE21H?
HE21H is a HE21H.
What parts can replace HE21H?
There are 5 known substitutes for HE21H: AEX255, K42203P4, D109 and 2 more. Substitute compatibility should be verified for your specific system.
Is HE21H still available?
HE21H 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