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PartsTable / COMPONENT / 34-78
34-78 ✓ 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 CONNECTOR ASSEMBLY,ELECTRICAL is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, lug_width: 0.230 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN, nut_style: ROUND, cone_width: 1.1721 INCHES NOMINAL IN, lug_length: 0.230 INCHES NOMINAL IN, construction: SOLID. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5120-00-032-9550, 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
34-78
NSN: 5120-00-032-9550
FSC: 5120
CAGE: 73342 — ALLISON TRANSMISSION INC DBA ALLISON TRANSMISSION, INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
lug_width0.230 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN
nut_styleROUND
cone_width1.1721 INCHES NOMINAL IN
lug_length0.230 INCHES NOMINAL IN
constructionSOLID
nut_diameter0.250 INCHES NOMINAL IN
shank_length2.000 INCHES NOMINAL2.000 INCHES NOMINAL IN
thread_class2B
bore_diameter1.3750 INCHES NOMINAL IN
nut_thickness0.250 INCHES NOMINAL IN
thread_length1.500 INCHES NOMINAL1.500 INCHES NOMINAL IN
NSN5120-00-032-9550
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CONNECTOR ASSEMBLY,ELECTRICAL TITLE COMPONENT PN 34-78 MFR CONNECTOR ASSEMBLY,ELE
KEY FEATURES
•
OUTSIDE DIAMETER: 1.750 INCHES NOMINAL IN
•
LUG WIDTH: 0.230 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN
•
HANDLE HOLE DIAMETER: 0.563 INCHES NOMINAL IN
•
DRIVE SURFACE SIZE: 0.754 INCHES MINIMUM AND 0.765 INCHES MAXIMUM SINGLE END IN
•
SURFACE TREATMENT: CHROMIUM AND NICKEL AND OXIDE OVERALL
•
ANGLE BETWEEN LUGS: 90.0 DEGREES NOMINAL
•
LUG LENGTH: 0.230 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH14.938 INCHES NOMINAL IN
OUTSIDE DIAMETER1.750 INCHES NOMINAL IN
LUG WIDTH0.230 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN
HANDLE HOLE DIAMETER0.563 INCHES NOMINAL IN
DRIVE SURFACE SIZE0.754 INCHES MINIMUM AND 0.765 INCHES MAXIMUM SINGLE END IN
SURFACE TREATMENTCHROMIUM AND NICKEL AND OXIDE OVERALL
ANGLE BETWEEN LUGS90.0 DEGREES NOMINAL
LUG LENGTH0.230 INCHES NOMINAL IN
SPECIAL FEATURES12 IN LONG HANDLE,TUBULAR LUG IN
OPENING DIAMETER1.125 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
51884Interchangeable
interchangeable cross-reference
interchangeable
0211587Interchangeable
interchangeable cross-reference
interchangeable
160418Interchangeable
interchangeable cross-reference
interchangeable
34-78Interchangeable
interchangeable cross-reference
interchangeable
3478-0005Interchangeable
interchangeable cross-reference
interchangeable
HU53J-4RInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 34-78?
34-78 is a CONNECTOR ASSEMBLY,ELECTRICAL.
What parts can replace 34-78?
There are 11 known substitutes for 34-78: 51884, 0211587, 160418 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 34-78?
34-78 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5120-00-032-9550. 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