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PartsTable / COMPONENT / 6209-3-7-2
6209-3-7-2 ✓ 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 CAP,TUBE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, seat_angle: 37.0 DEGREES, thread_class: 2B INTERNAL, connection_style: FLARE, special_features: 0.688 IN. W ACROSS FLATS,7.000 IN.

LG HEAD CAHIN,0.938 IN. LG @O/A W/O CHAIN IN, style_designator: CAP. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-180-5720, 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
6209-3-7-2
NSN: 4730-00-180-5720
FSC: 4730
CAGE: 20282 — ROBURT AND ASSOCIATES (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
seat_angle37.0 DEGREES
thread_class2B INTERNAL
connection_styleFLARE
special_features0.688 IN. W ACROSS FLATS,7.000 IN. LG HEAD CAHIN,0.938 IN. LG @O/A W/O CHAIN IN
style_designatorCAP
thread_directionRIGHT-HAND INTERNAL
surface_treatmentPASSIVATE OVERALL
nominal_thread_size0.375 INCHES INTERNAL IN
thread_pitch_diameters+0.3430 TO 0.3468 INCHES INTERNAL IN
thread_quantity_per_inch24 INTERNAL
thread_series_designatorUNF INTERNAL
NSN4730-00-180-5720
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 6209-3-7-2 · 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
•
STYLE DESIGNATOR: CAP
•
SEAT ANGLE: 37.0 DEGREES
•
THREAD QUANTITY PER INCH: 24 INTERNAL
•
THREAD DIRECTION: RIGHT-HAND INTERNAL
•
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 0.188 INCHES NOMINAL IN
•
CONNECTION STYLE: FLARE
•
SURFACE TREATMENT: PASSIVATE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORCAP
SEAT ANGLE37.0 DEGREES
THREAD QUANTITY PER INCH24 INTERNAL
THREAD DIRECTIONRIGHT-HAND INTERNAL
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED0.188 INCHES NOMINAL IN
SPECIAL FEATURES0.688 IN. W ACROSS FLATS,7.000 IN. LG HEAD CAHIN,0.938 IN. LG @O/A W/O CHAIN IN
CONNECTION STYLEFLARE
SURFACE TREATMENTPASSIVATE OVERALL
THREAD SERIES DESIGNATORUNF INTERNAL
NOMINAL THREAD SIZE0.375 INCHES INTERNAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
181-61Interchangeable
interchangeable cross-reference
interchangeable
43209Interchangeable
interchangeable cross-reference
interchangeable
6209Interchangeable
interchangeable cross-reference
interchangeable
0A1565Interchangeable
interchangeable cross-reference
interchangeable
S1304Interchangeable
interchangeable cross-reference
interchangeable
IDS2246Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 6209-3-7-2?
6209-3-7-2 is a CAP,TUBE.
What parts can replace 6209-3-7-2?
There are 19 known substitutes for 6209-3-7-2: 181-61, 43209, 6209 and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 6209-3-7-2?
6209-3-7-2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-180-5720. 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