PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 109B
109B ✓ 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,FIXED,WIRE WOUND,INDUCT. Key specifications include material: COPPER ALLOY OVERALL, body_type: CORED, head_type: SOLID, drive_end_style: RAISED SQUARE, connection_style: PLAIN, thread_direction: RIGHT-HAND EXTERNAL. 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
109B
NSN: 4730-00-011-2578
FSC: 4730
CAGE: 09505 — DAYCO INDUSTRIAL (CAN)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
body_typeCORED
head_typeSOLID
drive_end_styleRAISED SQUARE
connection_stylePLAIN
thread_directionRIGHT-HAND EXTERNAL
operating_pressure17.8 BAR MAXIMUM
nominal_thread_size1.500 INCHES INTERNAL IN
maximum_operating_temp200.0 CELSIUS DEGC
thread_quantity_per_inch14 INTERNAL
thread_series_designatorNPT INTERNAL
nondefinitive_spec/std_data1 TYPE
NSN4730-00-011-2578
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 109B · 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 109B?
109B is a RESISTOR,FIXED,WIRE WOUND,INDUCT.
What parts can replace 109B?
There are 29 known substitutes for 109B: 1098, 109B, 3151X2 and 26 more. Substitute compatibility should be verified for your specific system.
Is 109B still available?
109B 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