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5073N12 ✓ 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

CONNECTOR,RECEPTACLE,ELECTRICAL. Key specifications include material: COPPER ALLOY OVERALL, flow_angle: 90.0 DEGREES, leg_length: 0.859 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 4730-00-891-9967, 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
5073N12
NSN: 4730-00-891-9967
FSC: 4730
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
flow_angle90.0 DEGREES
leg_length0.859 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_size0.438 INCHES ALL ENDS IN
thread_series_designatorUNF ALL ENDS
nondefinitive_spec/std_data2B FIGURE
specification/standard_data81343-J512 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
nominal_outside_diameter_tube_accommodated0.250 INCHES ALL ENDS IN
NSN4730-00-891-9967
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 5073N12 · 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
•
MATERIAL: COPPER ALLOY OVERALL
•
SPECIFICATION/STANDARD DATA: 81343-J512 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
•
LEG LENGTH: 0.859 INCHES NOMINAL ALL ENDS IN
•
CONNECTION TYPE: THREADED EXTERNAL TUBE ALL ENDS
•
SEAT ANGLE: 45.0 DEGREES ALL ENDS
•
FLOW ANGLE: 90.0 DEGREES
•
THREAD CLASS: 2A ALL ENDS A
•
THREAD SERIES DESIGNATOR: UNF ALL ENDS
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALCOPPER ALLOY OVERALL
SPECIFICATION/STANDARD DATA81343-J512 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
LEG LENGTH0.859 INCHES NOMINAL ALL ENDS IN
CONNECTION TYPETHREADED EXTERNAL TUBE ALL ENDS
SEAT ANGLE45.0 DEGREES ALL ENDS
FLOW ANGLE90.0 DEGREES
THREAD CLASS2A ALL ENDS A
THREAD SERIES DESIGNATORUNF ALL ENDS
NOMINAL THREAD SIZE0.438 INCHES ALL ENDS IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES ALL ENDS IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 31
SAE-J512Interchangeable
interchangeable cross-reference
interchangeable
SAE J512 8-6 040102BInterchangeable
interchangeable cross-reference
interchangeable
J512Interchangeable
interchangeable cross-reference
interchangeable
SAE J512 14 010111BInterchangeable
interchangeable cross-reference
interchangeable
41F78Interchangeable
interchangeable cross-reference
interchangeable
2203P-4Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5073N12?
5073N12 is a CONNECTOR,RECEPTACLE,ELECTRICAL.
What parts can replace 5073N12?
There are 31 known substitutes for 5073N12: SAE-J512, SAE J512 8-6 040102B, J512 and 28 more. Substitute compatibility should be verified for your specific system.
Is 5073N12 still available?
5073N12 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