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Technical Data Sheet
PartsTable / COMPONENT / C3109X16X12
C3109X16X12 ✓ 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,FIXED,PAPER DIELECTRIC. Key specifications include material: STEEL OVERALL, head_type: SOLID, nut_style: TUBE FITTING LOCKNUT, seat_type: BEVELED, flow_angle: 90.0 DEGREES, leg_length: 0.59 INCHES NOMINAL FIRST END IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-278-3144, 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
C3109X16X12
NSN: 4730-00-278-3144
FSC: 4730
CAGE: 79470 — DANA CORP WEATHERHEAD DIV (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_typeSOLID
nut_styleTUBE FITTING LOCKNUT
seat_typeBEVELED
flow_angle90.0 DEGREES
leg_length0.59 INCHES NOMINAL FIRST END IN
nut_height0.310 INCHES NOMINAL IN
seat_angle37.0 DEGREES FIRST END
sweep_typeLONG
head_height0.38 INCHES MINIMUM IN
temp_rating-40.0 FAHRENHEIT AND 212.0 FAHRENHEIT SINGLE RESPONSE DEGF
thread_size3/4-12
NSN4730-00-278-3144
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: C3109X16X12 · 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
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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 29
SAE J514Interchangeable
interchangeable cross-reference
interchangeable
8-6 140140CInterchangeable
interchangeable cross-reference
interchangeable
1/2X3/8PTR-SInterchangeable
interchangeable cross-reference
interchangeable
24SB-20X12Interchangeable
interchangeable cross-reference
interchangeable
7350912Interchangeable
interchangeable cross-reference
interchangeable
T7-0126Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is C3109X16X12?
C3109X16X12 is a CAPACITOR,FIXED,PAPER DIELECTRIC.
What parts can replace C3109X16X12?
There are 29 known substitutes for C3109X16X12: SAE J514, 8-6 140140C, 1/2X3/8PTR-S and 26 more. Substitute compatibility should be verified for your specific system.
Is C3109X16X12 still available?
C3109X16X12 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026