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Technical Data Sheet
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X12709 ✓ 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 color: NATURAL SINGLE ACTUATOR, material: IRON OVERALL, body_type: SOLID, head_type: SOLID, body_style: HOLE MOUNT, body_width: 1.006 INCHES MINIMUM AND 1.026 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-278-3388, 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
X12709
NSN: 4730-00-278-3388
FSC: 4730
CAGE: 14351 — TELEDYNE CONTINENTAL MOTORS INDUSTRIAL PRODUCTS DIV TELEDYNE INDUSTRIES INC SUB OF TELEDYNE INC (USA)
SPECIFICATIONS
colorNATURAL SINGLE ACTUATOR
materialIRON OVERALL
body_typeSOLID
head_typeSOLID
body_styleHOLE MOUNT
body_width1.006 INCHES MINIMUM AND 1.026 INCHES MAXIMUM IN
body_height2.099 INCHES MINIMUM AND 2.119 INCHES MAXIMUM IN
body_length2.240 INCHES MINIMUM AND 2.260 INCHES MAXIMUM IN
overall_width1.062 INCHES NOMINAL IN
actuator_styleROUND
inclosure_typeFULLY INCLOSED
overall_height3.063 INCHES NOMINAL IN
NSN4730-00-278-3388
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: X12709 · 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
•
BODY TYPE: SOLID
•
NONDEFINITIVE SPEC/STD DATA: 2 TYPE
•
HEAD TYPE: SOLID
•
THREAD DIRECTION: RIGHT-HAND EXTERNAL
•
NOMINAL THREAD SIZE: 0.125 INCHES EXTERNAL IN
•
CONNECTION STYLE: PLAIN
•
SURFACE TREATMENT: ZINC OVERALL
•
THREAD SERIES DESIGNATOR: NPT EXTERNAL
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)
BODY TYPESOLID
NONDEFINITIVE SPEC/STD DATA2 TYPE
HEAD TYPESOLID
THREAD DIRECTIONRIGHT-HAND EXTERNAL
NOMINAL THREAD SIZE0.125 INCHES EXTERNAL IN
CONNECTION STYLEPLAIN
SURFACE TREATMENTZINC OVERALL
THREAD SERIES DESIGNATORNPT EXTERNAL
MATERIALIRON OVERALL
DRIVE END STYLERAISED SQUARE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 28
ESP-M-2.221-NPPInterchangeable
interchangeable cross-reference
interchangeable
444688Interchangeable
interchangeable cross-reference
interchangeable
9427882Interchangeable
interchangeable cross-reference
interchangeable
48-39-0520Interchangeable
interchangeable cross-reference
interchangeable
45277Interchangeable
interchangeable cross-reference
interchangeable
11584Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is X12709?
X12709 is a CAPACITOR,VARIABLE,CERAMIC DIELE.
What parts can replace X12709?
There are 28 known substitutes for X12709: ESP-M-2.221-NPP, 444688, 9427882 and 25 more. Substitute compatibility should be verified for your specific system.
Is X12709 still available?
X12709 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