PartsTable
Technical Data Sheet
PartsTable / MRO / FC2578
FC2578 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
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

FILTER,RADIO FREQUENCY INTERFERE. Key specifications include material: STEEL, body_width: 4.000 INCHES NOMINAL IN, body_height: 2.000 INCHES NOMINAL IN, body_length: 1.270 INCHES NOMINAL IN, thread_size: 1/2-20, thread_class: 2A A. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-013-7398, 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
MRO→ MRO_GENERAL→ FC2578
NSN: 4730-00-013-7398
FSC: 4730
CAGE: 63477 — FEDERAL MOGUL CORP SUB WAGNER BRAKE MOOG AUTOMOTIVE DIV (USA)
SPECIFICATIONS
materialSTEEL
body_width4.000 INCHES NOMINAL IN
body_height2.000 INCHES NOMINAL IN
body_length1.270 INCHES NOMINAL IN
thread_size1/2-20
thread_class2A A
inclosure_typeHERMETICALLY SEALED
overall_height2.338 INCHES NOMINAL IN
overall_length1.520 INCHES NOMINAL IN
style_designatorRECTANGULAR TERMINAL/TERMINALS ON TWO SURFACES
thread_directionRIGHT-HAND
seat_angle_in_deg45.00
NSN4730-00-013-7398
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: FC2578 · 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
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
SURFACE TREATMENT: CADMIUM OR CHROMATE ZINC
•
SEAT ANGLE IN DEG: 45.00
•
STYLE DESIGNATOR: INVERTED NUT, TUBE, FLARE
•
WIDTH ACROSS FLATS: 0.500 INCHES NOMINAL IN
•
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 0.312 INCHES NOMINAL IN
•
SCREW THREAD SERIES DESIGNATOR: UNF
•
SMALLEST INSIDE DIAMETER: 0.317 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
CASEHARDENING INDICATORNOT CASEHARDENED
SURFACE TREATMENTCADMIUM OR CHROMATE ZINC
SEAT ANGLE IN DEG45.00
STYLE DESIGNATORINVERTED NUT, TUBE, FLARE
WIDTH ACROSS FLATS0.500 INCHES NOMINAL IN
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED0.312 INCHES NOMINAL IN
SCREW THREAD SERIES DESIGNATORUNF
SMALLEST INSIDE DIAMETER0.317 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN
THREAD SIZE1/2-20
END ITEM IDENTIFICATIONHARNISCHFEGER CORP.;MODEL M320T2,CRANE TRUCK MOUNTED,NSN 3810-00-151-4431
VERIFIED SUBSTITUTES & CROSS-REFERENCES 30
105DInterchangeable
interchangeable cross-reference
interchangeable
100X5Interchangeable
interchangeable cross-reference
interchangeable
2160-5-16Interchangeable
interchangeable cross-reference
interchangeable
P6130AInterchangeable
interchangeable cross-reference
interchangeable
144488Interchangeable
interchangeable cross-reference
interchangeable
663Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is FC2578?
FC2578 is a FILTER,RADIO FREQUENCY INTERFERE. It is classified as a MRO (MRO_GENERAL).
What parts can replace FC2578?
There are 30 known substitutes for FC2578: 105D, 100X5, 2160-5-16 and 27 more. Substitute compatibility should be verified for your specific system.
Is FC2578 still available?
FC2578 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