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179558 ✓ 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

SLEEVE,COMPRESSION,TUBE-HOSE FIT. Key specifications include end_item_identification: USED ON T2B AUXILIARY POWER UNIT PART OF CH-47 CHINOOK HELICOPTER. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-353-3152, 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
179558
NSN: 4730-01-353-3152
FSC: 4730
CAGE: 60764 — WIGGINS LIFT CO INC (USA)
SPECIFICATIONS
special_featuresBRAND NAME DESCRIPTION AQ1 - 6 GAUGE;ADDITIONAL ITEM INFORMATION AQ1 23-13/64 X 17-3/8 X .006,R;REQUIRED MINIMUM ORDER QUANTITY 1;REQUIRED MULTIPLE ORDER QUANTITY 1
end_item_identificationUSED ON T2B AUXILIARY POWER UNIT PART OF CH-47 CHINOOK HELICOPTER
NSN4730-01-353-3152
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 179558 · 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 9
E2-182173A ITEM 4Interchangeable
interchangeable cross-reference
interchangeable
E2-182173AInterchangeable
interchangeable cross-reference
interchangeable
171496Interchangeable
interchangeable cross-reference
interchangeable
182173Interchangeable
interchangeable cross-reference
interchangeable
107001Interchangeable
interchangeable cross-reference
interchangeable
179558Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 179558?
179558 is a SLEEVE,COMPRESSION,TUBE-HOSE FIT.
What parts can replace 179558?
There are 9 known substitutes for 179558: E2-182173A ITEM 4, E2-182173A, 171496 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 179558?
179558 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-353-3152. 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