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Technical Data Sheet
PartsTable / COMPONENT / 4-3 010168B
4-3 010168B ✓ Verified by PartsTable
— · HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

CAPACITOR,VARIABLE,CERAMIC DIELE. Key specifications include material: COPPER ALLOY OVERALL, nut_style: TUBE COUPLING, nut_height: 0.625 INCHES NOMINAL IN, seat_angle: 45.00 DEGREES NOMINAL, thread_class: 3B, thread_series: UNS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-288-8499, 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
4-3 010168B
NSN: 4730-00-288-8499
FSC: 4730
CAGE: 81343 — SOCIETY OF AUTOMOTIVE ENGINEERS INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
nut_styleTUBE COUPLING
nut_height0.625 INCHES NOMINAL IN
seat_angle45.00 DEGREES NOMINAL
thread_class3B
thread_seriesUNS
thread_directionRIGHT-HAND
fabrication_methodFORGED
length_to_shoulder0.344 INCHES NOMINAL IN
width_across_flats0.750 INCHES NOMINAL IN
nominal_thread_size0.438 INCHES IN
smallest_inside_diameter0.192 INCHES MINIMUM AND 0.197 INCHES MAXIMUM IN
NSN4730-00-288-8499
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 4-3 010168B · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
NOMINAL TUBE OUTSIDE DIAMETER: 0.188 INCHES IN
•
MATERIAL: COPPER ALLOY OVERALL
•
NUT STYLE: TUBE COUPLING
•
THREAD QUANTITY PER INCH: 20
•
FABRICATION METHOD: FORGED
•
WIDTH ACROSS FLATS: 0.750 INCHES NOMINAL IN
•
SMALLEST INSIDE DIAMETER: 0.192 INCHES MINIMUM AND 0.197 INCHES MAXIMUM IN
•
NUT HEIGHT: 0.625 INCHES NOMINAL IN
TYPICAL APPLICATIONS
  • RAID cache protection during power loss events
  • Write-back cache enablement for storage controllers
  • Enterprise server data integrity assurance
  • Hot-swap battery/capacitor replacement in production
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL TUBE OUTSIDE DIAMETER0.188 INCHES IN
MATERIALCOPPER ALLOY OVERALL
NUT STYLETUBE COUPLING
THREAD QUANTITY PER INCH20
FABRICATION METHODFORGED
WIDTH ACROSS FLATS0.750 INCHES NOMINAL IN
SMALLEST INSIDE DIAMETER0.192 INCHES MINIMUM AND 0.197 INCHES MAXIMUM IN
NUT HEIGHT0.625 INCHES NOMINAL IN
LENGTH TO SHOULDER0.344 INCHES NOMINAL IN
THREAD CLASS3B
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
A51-32Interchangeable
interchangeable cross-reference
interchangeable
50-32Interchangeable
interchangeable cross-reference
interchangeable
A56-32Interchangeable
interchangeable cross-reference
interchangeable
532146-17Interchangeable
interchangeable cross-reference
interchangeable
538-011F15.0-60Interchangeable
interchangeable cross-reference
interchangeable
501174-501Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4-3 010168B?
4-3 010168B is a CAPACITOR,VARIABLE,CERAMIC DIELE.
What parts can replace 4-3 010168B?
There are 13 known substitutes for 4-3 010168B: A51-32, 50-32, A56-32 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4-3 010168B?
4-3 010168B is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-288-8499. 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