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12J50 ✓ 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

HARNESS,SAFETY,PERSONNEL,HOISTIN. Key specifications include material: COPPER ALLOY, thickness: 0.438 INCHES NOMINAL IN, flange_diameter: 4.500 INCHES NOMINAL IN, style_designator: ROUND, ONE BOLT HOLE CIRCLE, bolt_hole_diameter: 0.500 INCHES NOMINAL IN, bolt_circle_diameter: 4.000 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-967-4206, 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
12J50
NSN: 4730-00-967-4206
FSC: 4730
CAGE: 43689 — HUNTINGTON INGALLS INC DIV NEWPORT NEWS SHIPBUILDING (USA)
SPECIFICATIONS
materialCOPPER ALLOY
thickness0.438 INCHES NOMINAL IN
flange_diameter4.500 INCHES NOMINAL IN
style_designatorROUND, ONE BOLT HOLE CIRCLE
bolt_hole_diameter0.500 INCHES NOMINAL IN
bolt_hole_quantity4
bolt_circle_diameter4.000 INCHES NOMINAL IN
flange_section_stylePLAIN FACE
face_seating_surface_conditionGROUND
NSN4730-00-967-4206
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 12J50 · 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
•
BOLT CIRCLE DIAMETER: 4.000 INCHES NOMINAL IN
•
FLANGE DIAMETER: 4.500 INCHES NOMINAL IN
•
MATERIAL: COPPER ALLOY
•
STYLE DESIGNATOR: ROUND, ONE BOLT HOLE CIRCLE
•
THICKNESS: 0.438 INCHES NOMINAL IN
•
BOLT HOLE QUANTITY: 4
•
BOLT HOLE DIAMETER: 0.500 INCHES NOMINAL IN
•
FACE SEATING SURFACE CONDITION: GROUND
TECHNICAL CHARACTERISTICS (FLIS)
BOLT CIRCLE DIAMETER4.000 INCHES NOMINAL IN
FLANGE DIAMETER4.500 INCHES NOMINAL IN
MATERIALCOPPER ALLOY
STYLE DESIGNATORROUND, ONE BOLT HOLE CIRCLE
THICKNESS0.438 INCHES NOMINAL IN
BOLT HOLE QUANTITY4
BOLT HOLE DIAMETER0.500 INCHES NOMINAL IN
FACE SEATING SURFACE CONDITIONGROUND
FLANGE SECTION STYLEPLAIN FACE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
20217-4Interchangeable
interchangeable cross-reference
interchangeable
695805-1Interchangeable
interchangeable cross-reference
interchangeable
137746Interchangeable
interchangeable cross-reference
interchangeable
44-1-16-0Interchangeable
interchangeable cross-reference
interchangeable
03J50Interchangeable
interchangeable cross-reference
interchangeable
5070-060Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 12J50?
12J50 is a HARNESS,SAFETY,PERSONNEL,HOISTIN.
What parts can replace 12J50?
There are 18 known substitutes for 12J50: 20217-4, 695805-1, 137746 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 12J50?
12J50 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-967-4206. 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