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Technical Data Sheet
PartsTable / COMPONENT / 75323-1
75323-1 ✓ 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 NUT,TUBE COUPLING is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY BODY, thread_class: 3B FIRST END, connection_type: THREADED INTERNAL BOSS SECOND END, connection_style: GASKET SEAL(BOSS) SECOND END, style_designator: ANGLE, thread_direction: RIGHT-HAND FIRST END. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-541-0991, 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
75323-1
NSN: 4730-00-541-0991
FSC: 4730
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialALUMINUM ALLOY BODY
thread_class3B FIRST END
connection_typeTHREADED INTERNAL BOSS SECOND END
connection_styleGASKET SEAL(BOSS) SECOND END
style_designatorANGLE
thread_directionRIGHT-HAND FIRST END
features_providedPRESSURE TIGHT OUTLET SIDE
surface_treatmentANODIZE LOCATION NOT OTHERWISE SPECIFIED
operating_pressure5000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
disk_loading_methodSPRING
flow_control_devicePISTON
nominal_thread_size0.750 INCHES FIRST END IN
NSN4730-00-541-0991
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 75323-1 · 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
•
FABRICATION METHOD: MACHINED
•
NUT STYLE: TUBE COUPLING
•
THREAD DIRECTION: RIGHT-HAND
•
MATERIAL: COPPER ALLOY 464 OVERALL
•
NOMINAL THREAD SIZE: 0.562 INCHES IN
•
SMALLEST INSIDE DIAMETER: 0.386 INCHES NOMINAL IN
•
LENGTH TO SHOULDER: 0.562 INCHES NOMINAL IN
•
NOMINAL TUBE OUTSIDE DIAMETER: 0.250 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
FABRICATION METHODMACHINED
NUT STYLETUBE COUPLING
THREAD DIRECTIONRIGHT-HAND
MATERIALCOPPER ALLOY 464 OVERALL
NOMINAL THREAD SIZE0.562 INCHES IN
SMALLEST INSIDE DIAMETER0.386 INCHES NOMINAL IN
LENGTH TO SHOULDER0.562 INCHES NOMINAL IN
NOMINAL TUBE OUTSIDE DIAMETER0.250 INCHES IN
NUT HEIGHT0.750 INCHES NOMINAL IN
THREAD CLASS2B
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
S214Interchangeable
interchangeable cross-reference
interchangeable
75323-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 75323-1?
75323-1 is a NUT,TUBE COUPLING.
What parts can replace 75323-1?
There are 2 known substitutes for 75323-1: S214, 75323-1. Substitute compatibility should be verified for your specific system.
What is the NSN for 75323-1?
75323-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-541-0991. 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