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Technical Data Sheet
644-818 ✓ Verified by PartsTable
· COMPONENT
WHAT YOU NEED TO KNOW
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Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The MICROCIRCUIT,DIGITAL is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, body_style: PLAIN, SOLID, body_width: 0.220 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN, bore_style: PLAIN BOTH ENDS, tooth_form: STANDARD, body_height: 0.140 INCHES MINIMUM AND 0.185 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 3020-00-798-6584, 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
644-818
NSN: 3020-00-798-6584
FSC: 3020
CAGE: 99551 — GOODRICH CORPORATION DBA GOODRICH CORP (USA)
SPECIFICATIONS
materialSTEEL OVERALL
body_stylePLAIN, SOLID
body_width0.220 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
bore_stylePLAIN BOTH ENDS
tooth_formSTANDARD
body_height0.140 INCHES MINIMUM AND 0.185 INCHES MAXIMUM IN
body_length0.785 INCHES MAXIMUM IN
pitch_diameter1.1440 INCHES NOMINAL IN
pressure_angle30.0000 DEGREES
teeth_quantity12
style_designatorPROTRUDING HUBS
features_providedHERMETICALLY SEALED AND MONOLITHIC AND POSITIVE OUTPUTS AND LOW POWER AND SCHOTTKY AND 3-STATE OUTPUT
NSN3020-00-798-6584
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available MICROCIRCUIT,DIGITAL TITLE COMPONENT PN 644-818 MFR MICROCIRCUIT,DIGITAL
KEY FEATURES
PITCH DIAMETER: 1.1440 INCHES NOMINAL IN
HUB NOMINAL DIAMETER: 0.4035 INCHES FIRST END IN
NOMINAL OUTSIDE DIAMETER: 1.1598 INCHES IN
TOOTH FORM: STANDARD
TEETH QUANTITY: 12
MATERIAL: STEEL OVERALL
HUB STYLE DESIGNATOR: PLAIN BOTH ENDS
FACE NOMINAL WIDTH: 0.248 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
PITCH DIAMETER1.1440 INCHES NOMINAL IN
HUB NOMINAL DIAMETER0.4035 INCHES FIRST END IN
NOMINAL OUTSIDE DIAMETER1.1598 INCHES IN
TOOTH FORMSTANDARD
TEETH QUANTITY12
MATERIALSTEEL OVERALL
HUB STYLE DESIGNATORPLAIN BOTH ENDS
FACE NOMINAL WIDTH0.248 INCHES IN
BORE NOMINAL DIAMETER0.219 INCHES BOTH ENDS IN
BODY STYLEPLAIN, SOLID
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
639-614Interchangeable
interchangeable cross-reference
interchangeable
101681-005Interchangeable
interchangeable cross-reference
interchangeable
5214-399Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 644-818?
644-818 is a MICROCIRCUIT,DIGITAL.
What parts can replace 644-818?
There are 3 known substitutes for 644-818: 639-614, 101681-005, 5214-399. Substitute compatibility should be verified for your specific system.
What is the NSN for 644-818?
644-818 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3020-00-798-6584. This indicates validated use in U.S. government and defense supply chains.
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