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Technical Data Sheet
PartsTable / COMPONENT / 55X8
55X8 ✓ 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 ADAPTER,STRAIGHT,PIPE TO TUBE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, flow_angle: 90.0 DEGREES, leg_length: 1.203 INCHES NOMINAL ALL ENDS IN, seat_angle: 45.0 DEGREES ALL ENDS, thread_class: 2A ALL ENDS A, connection_type: THREADED EXTERNAL TUBE ALL ENDS. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-288-9420, 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
55X8
NSN: 4730-00-288-9420
FSC: 4730
CAGE: 01276 — DANFOSS POWER SOLUTIONS II, LLC (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
flow_angle90.0 DEGREES
leg_length1.203 INCHES NOMINAL ALL ENDS IN
seat_angle45.0 DEGREES ALL ENDS
thread_class2A ALL ENDS A
connection_typeTHREADED EXTERNAL TUBE ALL ENDS
connection_styleFLARED (TUBE) ALL ENDS
nominal_thread_size0.750 INCHES ALL ENDS IN
thread_series_designatorUNF ALL ENDS
specification/standard_data81343-SAEJ513 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION
material_document_and_classificationSAE J461,ALLOY CA377 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
nominal_outside_diameter_tube_accommodated0.500 INCHES ALL ENDS IN
NSN4730-00-288-9420
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 55X8 · 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
•
CONNECTION STYLE: FLARED (TUBE) ALL ENDS
•
SEAT ANGLE: 45.0 DEGREES ALL ENDS
•
THREAD SERIES DESIGNATOR: UNF ALL ENDS
•
NOMINAL THREAD SIZE: 0.750 INCHES ALL ENDS IN
•
CONNECTION TYPE: THREADED EXTERNAL TUBE ALL ENDS
•
LEG LENGTH: 1.203 INCHES NOMINAL ALL ENDS IN
•
SPECIFICATION/STANDARD DATA: 81343-SAEJ513 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.500 INCHES ALL ENDS IN
TECHNICAL CHARACTERISTICS (FLIS)
CONNECTION STYLEFLARED (TUBE) ALL ENDS
SEAT ANGLE45.0 DEGREES ALL ENDS
THREAD SERIES DESIGNATORUNF ALL ENDS
NOMINAL THREAD SIZE0.750 INCHES ALL ENDS IN
CONNECTION TYPETHREADED EXTERNAL TUBE ALL ENDS
LEG LENGTH1.203 INCHES NOMINAL ALL ENDS IN
SPECIFICATION/STANDARD DATA81343-SAEJ513 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.500 INCHES ALL ENDS IN
THREAD CLASS2A ALL ENDS A
MATERIALCOPPER ALLOY OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 33
350-10080-2Interchangeable
interchangeable cross-reference
interchangeable
35008Interchangeable
interchangeable cross-reference
interchangeable
FS1508Interchangeable
interchangeable cross-reference
interchangeable
278-2112-010Interchangeable
interchangeable cross-reference
interchangeable
J5126-6010201BInterchangeable
interchangeable cross-reference
interchangeable
SAE J512 6-6 010201BInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 55X8?
55X8 is a ADAPTER,STRAIGHT,PIPE TO TUBE.
What parts can replace 55X8?
There are 33 known substitutes for 55X8: 350-10080-2, 35008, FS1508 and 30 more. Substitute compatibility should be verified for your specific system.
Is 55X8 still available?
55X8 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