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F66555-8 — ADAPTER,STRAIGHT,TUBE TO HOSE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

F66555-8: ADAPTER,STRAIGHT,TUBE TO HOSE.

The ADAPTER,STRAIGHT,TUBE TO HOSE is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY OVERALL, flow_angle: 45.0 DEGREES, leg_length: 1.957 INCHES NOMINAL SECOND END IN, seat_angle: 37.0 DEGREES FIRST END, thread_class: 3B FIRST END, connection_style: SWIVEL NUT (HOSE GRIPPING) SECOND END. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-103-2195, 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
F66555-8
NSN: 4730-00-103-2195
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 00624 — EATON AEROQUIP LLC DBA JACKSON NORTH 1 DIV FLUID AND ELECTRICAL DISTRIBUTION (USA)
SPECIFICATIONS
materialALUMINUM ALLOY OVERALL
flow_angle45.0 DEGREES
leg_length1.957 INCHES NOMINAL SECOND END IN
seat_angle37.0 DEGREES FIRST END
thread_class3B FIRST END
connection_styleSWIVEL NUT (HOSE GRIPPING) SECOND END
special_featuresONE SLEEVE FURNISHED
surface_treatmentANODIZE AND PASSIVATE OVERALL
nominal_thread_size0.750 INCHES FIRST END IN
thread_quantity_per_inch16 FIRST END
thread_series_designatorUNIFIED NATIONAL JOINT (UNJ) FIRST END
furnished_items_and_quantity1 LONG COUPLING NUT
NSN4730-00-103-2195
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: F66555-8 · 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
KEY FEATURES
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FURNISHED ITEMS AND QUANTITY: 1 LONG COUPLING NUT
•
FLOW ANGLE: 45.0 DEGREES
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE AND PSA000 MIL SPEC 1ST TREATMENT RESPONSE OVERALL
•
CONNECTION STYLE: SWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST END
•
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED: 0.406 INCHES SECOND END IN
•
NOMINAL OUTSIDE DIAMETER HOSE ACCOMMODATED: 0.562 INCHES SECOND END IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-367,ALLOY 6061,T6 FED SPEC SINGLE MATERIAL RESPONSE AND QQ-A-225/6,ALLOY 2024 FED SPEC 1ST MATERIAL RESPONSE AND QQ-W-423,3-5 FED SPEC 2ND MATERIAL RESPONSE AND QQ-S-763,CLASS 304 FED SPEC 3RD MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
FURNISHED ITEMS AND QUANTITY1 LONG COUPLING NUT
FLOW ANGLE45.0 DEGREES
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE AND PSA000 MIL SPEC 1ST TREATMENT RESPONSE OVERALL
CONNECTION STYLESWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST END
CONNECTION STYLESWIVEL NUT (HOSE GRIPPING) SECOND END
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED0.406 INCHES SECOND END IN
NOMINAL OUTSIDE DIAMETER HOSE ACCOMMODATED0.562 INCHES SECOND END IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-367,ALLOY 6061,T6 FED SPEC SINGLE MATERIAL RESPONSE AND QQ-A-225/6,ALLOY 2024 FED SPEC 1ST MATERIAL RESPONSE AND QQ-W-423,3-5 FED SPEC 2ND MATERIAL RESPONSE AND QQ-S-763,CLASS 304 FED SPEC 3RD MATERIAL RESPONSE OVERALL
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.500 INCHES FIRST END IN
LEG LENGTH0.709 INCHES NOMINAL FIRST END IN
SUBSTITUTES & CROSS-REFERENCES 4
MS27059-8Reference document
Same NSN cross-reference
Reference document — Secondary reference
R27059-8Reference document
Same NSN cross-reference
Reference document — Secondary reference
MIL-DTL-27272Reference document
Same NSN cross-reference
Reference document — Identification reference
MILF27272Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is F66555-8?
F66555-8 is a ADAPTER,STRAIGHT,TUBE TO HOSE.
What parts can replace F66555-8?
There are 4 known substitutes for F66555-8: MS27059-8, R27059-8, MIL-DTL-27272 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for F66555-8?
F66555-8 is cataloged in the U.S. Government catalog under NSN 4730-00-103-2195. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.