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502X3 — ADAPTER,STRAIGHT,PIPE TO TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

502X3: ADAPTER,STRAIGHT,PIPE TO TUBE.

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: 0.750 INCHES NOMINAL ALL ENDS IN, seat_angle: 42.0 DEGREES ALL ENDS, thread_class: 3A ALL ENDS A, connection_type: THREADED INTERNAL TUBE ALL ENDS. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-278-3133, 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
502X3
NSN: 4730-00-278-3133
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 01276 — DANFOSS POWER SOLUTIONS II, LLC (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
flow_angle90.0 DEGREES
leg_length0.750 INCHES NOMINAL ALL ENDS IN
seat_angle42.0 DEGREES ALL ENDS
thread_class3A ALL ENDS A
connection_typeTHREADED INTERNAL TUBE ALL ENDS
connection_styleINVERTED FLARE (TUBE) ALL ENDS
nominal_thread_size0.375 INCHES ALL ENDS IN
thread_series_designatorUNF ALL ENDS
nondefinitive_spec/std_data6 FIGURE
specification/standard_data81343-J512 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
nominal_outside_diameter_tube_accommodated0.188 INCHES ALL ENDS IN
NSN4730-00-278-3133
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 502X3 · 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
•
FLOW ANGLE: 90.0 DEGREES
•
CONNECTION STYLE: INVERTED FLARE (TUBE) ALL ENDS
•
CONNECTION TYPE: THREADED INTERNAL TUBE ALL ENDS
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.188 INCHES ALL ENDS IN
•
LEG LENGTH: 0.750 INCHES NOMINAL ALL ENDS IN
•
NOMINAL THREAD SIZE: 0.375 INCHES ALL ENDS IN
•
SEAT ANGLE: 42.0 DEGREES ALL ENDS
•
SPECIFICATION/STANDARD DATA: 81343-J512 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
TECHNICAL CHARACTERISTICS
FLOW ANGLE90.0 DEGREES
CONNECTION STYLEINVERTED FLARE (TUBE) ALL ENDS
CONNECTION TYPETHREADED INTERNAL TUBE ALL ENDS
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.188 INCHES ALL ENDS IN
LEG LENGTH0.750 INCHES NOMINAL ALL ENDS IN
NOMINAL THREAD SIZE0.375 INCHES ALL ENDS IN
SEAT ANGLE42.0 DEGREES ALL ENDS
SPECIFICATION/STANDARD DATA81343-J512 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
NONDEFINITIVE SPEC/STD DATA6 FIGURE
THREAD CLASS3A ALL ENDS A
OTHER ITEMS IN FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895 4730-00-000-4289 4730-00-000-4445 4730-00-000-8373 4730-00-000-8897 4730-00-001-0007 4730-00-001-0008
SUBSTITUTES & CROSS-REFERENCES 3
J512Reference document
Same NSN cross-reference
Reference document — Secondary reference
SAE-J512Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
3-3 040201BReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 502X3?
502X3 is a ADAPTER,STRAIGHT,PIPE TO TUBE.
What parts can replace 502X3?
There are 3 known substitutes for 502X3: J512, SAE-J512, 3-3 040201B. Substitute compatibility should be verified for your specific system.
What is the NSN for 502X3?
502X3 is cataloged in the U.S. Government catalog under NSN 4730-00-278-3133. 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.