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PartsTable / COMPONENT / 720337-32
720337-32 ✓ 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: ALUMINUM ALLOY OVERALL, nut_style: TUBE COUPLING, nut_height: 1.734 INCHES NOMINAL IN, thread_class: 3B, thread_series: UN, thread_direction: RIGHT-HAND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-278-8561, 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
720337-32
NSN: 4730-00-278-8561
FSC: 4730
CAGE: 56232 — LOCKHEED MARTIN CORPORATION DIV RMS - MITCHEL FIELD (USA)
SPECIFICATIONS
materialALUMINUM ALLOY OVERALL
nut_styleTUBE COUPLING
nut_height1.734 INCHES NOMINAL IN
thread_class3B
thread_seriesUN
thread_directionRIGHT-HAND
surface_treatmentANODIZE OVERALL
length_to_shoulder1.462 INCHES NOMINAL IN
width_across_flats2.855 INCHES MINIMUM AND 2.895 INCHES MAXIMUM IN
nominal_thread_size2.500 INCHES IN
smallest_inside_diameter2.167 INCHES MINIMUM AND 2.170 INCHES MAXIMUM IN
thread_quantity_per_inch12
NSN4730-00-278-8561
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 720337-32 · 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
•
LENGTH TO SHOULDER: 1.462 INCHES NOMINAL IN
•
NUT HEIGHT: 1.734 INCHES NOMINAL IN
•
SURFACE TREATMENT: ANODIZE OVERALL
•
MATERIAL: ALUMINUM ALLOY OVERALL
•
NOMINAL THREAD SIZE: 2.500 INCHES IN
•
SMALLEST INSIDE DIAMETER: 2.167 INCHES MINIMUM AND 2.170 INCHES MAXIMUM IN
•
THREAD SERIES: UN
•
NOMINAL TUBE OUTSIDE DIAMETER: 2.000 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
LENGTH TO SHOULDER1.462 INCHES NOMINAL IN
NUT HEIGHT1.734 INCHES NOMINAL IN
SURFACE TREATMENTANODIZE OVERALL
MATERIALALUMINUM ALLOY OVERALL
NOMINAL THREAD SIZE2.500 INCHES IN
SMALLEST INSIDE DIAMETER2.167 INCHES MINIMUM AND 2.170 INCHES MAXIMUM IN
THREAD SERIESUN
NOMINAL TUBE OUTSIDE DIAMETER2.000 INCHES IN
NUT STYLETUBE COUPLING
THREAD QUANTITY PER INCH12
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
R1-597Interchangeable
interchangeable cross-reference
interchangeable
913009Interchangeable
interchangeable cross-reference
interchangeable
28888Interchangeable
interchangeable cross-reference
interchangeable
68FL3/8X1/4Interchangeable
interchangeable cross-reference
interchangeable
68VL-6-4Interchangeable
interchangeable cross-reference
interchangeable
031L7EInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 720337-32?
720337-32 is a CONNECTOR,RECEPTACLE,ELECTRICAL.
What parts can replace 720337-32?
There are 12 known substitutes for 720337-32: R1-597, 913009, 28888 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 720337-32?
720337-32 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-278-8561. 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