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PartsTable / COMPONENT / G4-78
G4-78 ✓ 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 GEAR,SPUR is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2024 OVERALL, body_style: PLAIN, SOLID, bore_style: PLAIN BOTH ENDS, tooth_form: STANDARD, pitch_diameter: 1.6250 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 3020-00-992-5715, 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
G4-78
NSN: 3020-00-992-5715
FSC: 3020
CAGE: 00141 — ROLLER BEARING CO OF AMERICA, INC DIV PIC DESIGN (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024 OVERALL
body_stylePLAIN, SOLID
bore_stylePLAIN BOTH ENDS
tooth_formSTANDARD
pitch_diameter1.6250 INCHES NOMINAL IN
pressure_angle20.0000 DEGREES
teeth_quantity78
style_designatorPROTRUDING HUB
surface_treatmentANODIZE OVERALL
face_nominal_width0.125 INCHES IN
backlash_designationGRADE E
hub_nominal_diameter0.500 INCHES FIRST END IN
NSN3020-00-992-5715
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available GEAR,SPUR TITLE COMPONENT PN G4-78 MFR GEAR,SPUR
KEY FEATURES
•
PRECISION CLASSIFICATION: QUALITY NUMBER 10 OR QUALITY NUMBER 11
•
BODY STYLE: PLAIN, SOLID
•
HUB NOMINAL DIAMETER: 0.500 INCHES FIRST END IN
•
PRESSURE ANGLE: 20.0000 DEGREES
•
TEETH QUANTITY: 78
•
STYLE DESIGNATOR: PROTRUDING HUB
•
SURFACE TREATMENT: ANODIZE OVERALL
•
NOMINAL OUTSIDE DIAMETER: 1.667 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
PRECISION CLASSIFICATIONQUALITY NUMBER 10 OR QUALITY NUMBER 11
BODY STYLEPLAIN, SOLID
HUB NOMINAL DIAMETER0.500 INCHES FIRST END IN
PRESSURE ANGLE20.0000 DEGREES
TEETH QUANTITY78
STYLE DESIGNATORPROTRUDING HUB
SURFACE TREATMENTANODIZE OVERALL
NOMINAL OUTSIDE DIAMETER1.667 INCHES IN
BORE NOMINAL DIAMETER0.250 INCHES BOTH ENDS IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/6,T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
01A18691AInterchangeable
interchangeable cross-reference
interchangeable
32C720HInterchangeable
interchangeable cross-reference
interchangeable
15478Interchangeable
interchangeable cross-reference
interchangeable
53A68A124Interchangeable
interchangeable cross-reference
interchangeable
BAT1Interchangeable
interchangeable cross-reference
interchangeable
114007Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is G4-78?
G4-78 is a GEAR,SPUR.
What parts can replace G4-78?
There are 9 known substitutes for G4-78: 01A18691A, 32C720H, 15478 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for G4-78?
G4-78 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3020-00-992-5715. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026