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PartsTable / COMPONENT / LL-H40-9177
LL-H40-9177 ✓ 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 ELECTRONIC COMPONENTS ASSEMBLY is a the manufacturer industrial component. Key specifications include end_item_identification: CIRCULATOR,WATER MODEL H-8. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-500-0746, 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
LL-H40-9177
NSN: 4730-01-500-0746
FSC: 4730
CAGE: 66736 — NAVAL MEDICAL MATERIAL SUPPORT COMMAND DETACHMENT (USA)
SPECIFICATIONS
end_item_identificationCIRCULATOR,WATER MODEL H-8
NSN4730-01-500-0746
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: LL-H40-9177 · 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
TECHNICAL CHARACTERISTICS (FLIS)
END ITEM IDENTIFICATIONCIRCULATOR,WATER MODEL H-8
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
A55-255Interchangeable
interchangeable cross-reference
interchangeable
55-255Interchangeable
interchangeable cross-reference
interchangeable
00725665410130Interchangeable
interchangeable cross-reference
interchangeable
683RH-7/16-3/8SInterchangeable
interchangeable cross-reference
interchangeable
51-10006Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is LL-H40-9177?
LL-H40-9177 is a ELECTRONIC COMPONENTS ASSEMBLY.
What parts can replace LL-H40-9177?
There are 5 known substitutes for LL-H40-9177: A55-255, 55-255, 00725665410130 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for LL-H40-9177?
LL-H40-9177 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-500-0746. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026