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Technical Data Sheet
PartsTable / COMPONENT / UN-4
UN-4 ✓ 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 UNIVERSAL JOINT,VEHICULAR is a the manufacturer industrial component. Key specifications include design_type: SPIDER AND BEARINGS, overall_length: 1.510 INCHES NOMINAL IN, special_features: 2ND END BORE,0.250 IN. IN, hub_bore_diameter: 0.250 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, connection_end_type: HUB,BORED FIRST END.

This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 2520-01-168-1678, 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
UN-4
NSN: 2520-01-168-1678
FSC: 2520
CAGE: 00328 — DESIGNATRONICS INCORPORATED DIV STERLING INSTRUMENTS DIV (USA)
SPECIFICATIONS
design_typeSPIDER AND BEARINGS
overall_length1.510 INCHES NOMINAL IN
special_features2ND END BORE,0.250 IN. IN
hub_bore_diameter0.250 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
connection_end_typeHUB,BORED FIRST END
NSN2520-01-168-1678
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available UNIVERSAL JOINT,VEHICULAR TITLE COMPONENT PN UN-4 MFR UNIVERSAL JOINT,VEHICU
KEY FEATURES
•
DESIGN TYPE: SPIDER AND BEARINGS
•
CONNECTION END TYPE: HUB,BORED FIRST END
•
HUB BORE DIAMETER: 0.250 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH1.510 INCHES NOMINAL IN
DESIGN TYPESPIDER AND BEARINGS
CONNECTION END TYPEHUB,BORED FIRST END
HUB BORE DIAMETER0.250 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
CONNECTION END TYPEHUB,BORED SECOND END
SPECIAL FEATURES2ND END BORE,0.250 IN. IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
0102-2000-0023Interchangeable
interchangeable cross-reference
interchangeable
806-6Interchangeable
interchangeable cross-reference
interchangeable
02-0324-0806-22Interchangeable
interchangeable cross-reference
interchangeable
BC3Interchangeable
interchangeable cross-reference
interchangeable
917375Interchangeable
interchangeable cross-reference
interchangeable
200-257Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is UN-4?
UN-4 is a UNIVERSAL JOINT,VEHICULAR.
What parts can replace UN-4?
There are 16 known substitutes for UN-4: 0102-2000-0023, 806-6, 02-0324-0806-22 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for UN-4?
UN-4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 2520-01-168-1678. 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