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Technical Data Sheet
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112578 ✓ 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

The LOUDSPEAKER,PERMANENT MAGNET is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, body_type: SOLID, end_style: SPRING END,SQUARED AND GROUND BOTH ENDS, head_type: SOLID, unit_design: INTERNAL, coil_quantity: 12. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-011-2578, 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
112578
NSN: 4730-00-011-2578
FSC: 4730
CAGE: 21450 — ARMY WEAPONS COMMAND ATTN AMSWE-REE-S (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
body_typeSOLID
end_styleSPRING END,SQUARED AND GROUND BOTH ENDS
head_typeSOLID
unit_designINTERNAL
coil_quantity12
drive_end_styleSQUARE
inside_diameter0.700 INCHES NOMINAL IN
connection_stylePLAIN
special_featuresMODEL: AN/USM-718A A
style_designatorCYLINDRICAL
thread_directionRIGHT-HAND EXTERNAL
NSN4730-00-011-2578
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 112578 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 29
1098Interchangeable
interchangeable cross-reference
interchangeable
109BInterchangeable
interchangeable cross-reference
interchangeable
3151X2Interchangeable
interchangeable cross-reference
interchangeable
1FC728Interchangeable
interchangeable cross-reference
interchangeable
7H3171Interchangeable
interchangeable cross-reference
interchangeable
431-90400Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 112578?
112578 is a LOUDSPEAKER,PERMANENT MAGNET.
What parts can replace 112578?
There are 29 known substitutes for 112578: 1098, 109B, 3151X2 and 26 more. Substitute compatibility should be verified for your specific system.
Is 112578 still available?
112578 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