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Technical Data Sheet
PartsTable / COMPONENT / 372520
372520 ✓ 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

RESISTOR,VARIABLE,WIRE WOUND,NON. Key specifications include end_item_identification: ACFT ENG J57. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-203-1072, 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
372520
NSN: 4730-00-203-1072
FSC: 4730
CAGE: 06848 — HONEYWELL INTERNATIONAL INC DIV AEROSPACE-SOUTH BEND (BENDIX DR) (USA)
SPECIFICATIONS
special_featuresMATL STEEL PER AMS 5508,0.045 IN. MIN AND 0.055 IN. MAX THICK; HARDNESS PER ROCKWELL C30 MIN AND C38 MAX; 1 HOLE 0.636 IN. MIN AND 0.646 IN. MAX DIA; 2 HOLES 0.065 IN. MIN AND 0.075 IN. MAX DIA IN
end_item_identificationACFT ENG J57
NSN4730-00-203-1072
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 372520 · 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 28
111609Interchangeable
interchangeable cross-reference
interchangeable
111-607Interchangeable
interchangeable cross-reference
interchangeable
5518Interchangeable
interchangeable cross-reference
interchangeable
MILS4040Interchangeable
interchangeable cross-reference
interchangeable
2489624Interchangeable
interchangeable cross-reference
interchangeable
312W475Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 372520?
372520 is a RESISTOR,VARIABLE,WIRE WOUND,NON.
What parts can replace 372520?
There are 28 known substitutes for 372520: 111609, 111-607, 5518 and 25 more. Substitute compatibility should be verified for your specific system.
Is 372520 still available?
372520 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