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Technical Data Sheet
666138-559 ✓ 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 GEAR,SPUR is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, body_style: PLAIN, SOLID, bore_style: PLAIN BOTH ENDS, tooth_form: STANDARD, pitch_diameter: 0.6250 INCHES NOMINAL IN, pressure_angle: 20.0000 DEGREES. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3020-00-781-5697, 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
666138-559
NSN: 3020-00-781-5697
FSC: 3020
CAGE: 12436 — BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION INC. DIV BAE SYSTEMS INFORMATION & ELECTRONIC SYSTEMS INTEGRATION INC (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
body_stylePLAIN, SOLID
bore_stylePLAIN BOTH ENDS
tooth_formSTANDARD
pitch_diameter0.6250 INCHES NOMINAL IN
pressure_angle20.0000 DEGREES
teeth_quantity30
style_designatorPROTRUDING HUB
surface_treatmentPASSIVATE OVERALL
face_nominal_width0.125 INCHES IN
hub_nominal_diameter0.375 INCHES FIRST END IN
hub_style_designatorPINNED FIRST END
NSN3020-00-781-5697
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available GEAR,SPUR TITLE COMPONENT PN 666138-559 MFR GEAR,SPUR
KEY FEATURES
PITCH DIAMETER: 0.6250 INCHES NOMINAL IN
TEETH QUANTITY: 30
STYLE DESIGNATOR: PROTRUDING HUB
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL OUTSIDE DIAMETER: 0.667 INCHES IN
HUB NOMINAL DIAMETER: 0.375 INCHES FIRST END IN
BORE STYLE: PLAIN BOTH ENDS
FACE NOMINAL WIDTH: 0.125 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
PITCH DIAMETER0.6250 INCHES NOMINAL IN
TEETH QUANTITY30
STYLE DESIGNATORPROTRUDING HUB
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL OUTSIDE DIAMETER0.667 INCHES IN
HUB NOMINAL DIAMETER0.375 INCHES FIRST END IN
BORE STYLEPLAIN BOTH ENDS
FACE NOMINAL WIDTH0.125 INCHES IN
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END0.250 INCHES FIRST END IN
HUB STYLE DESIGNATORPINNED FIRST END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
F-15502 PC10-0Interchangeable
interchangeable cross-reference
interchangeable
15530Interchangeable
interchangeable cross-reference
interchangeable
A-15530Interchangeable
interchangeable cross-reference
interchangeable
GS59995Interchangeable
interchangeable cross-reference
interchangeable
N-21067-K8205Interchangeable
interchangeable cross-reference
interchangeable
7535Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 666138-559?
666138-559 is a GEAR,SPUR.
What parts can replace 666138-559?
There are 13 known substitutes for 666138-559: F-15502 PC10-0, 15530, A-15530 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 666138-559?
666138-559 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3020-00-781-5697. This indicates validated use in U.S. government and defense supply chains.
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