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Technical Data Sheet
PartsTable / COMPONENT / 5400-S2-16
5400-S2-16 ✓ 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 COUPLING HALF,SELF-SEALING is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY BODY, thread_class: 2B ALL ENDS, connection_type: THREADED INTERNAL BOSS FIRST FLUID END CONNECTION, connection_style: BOSS GASKET SEAL ALL ENDS, style_designator: MALE COUPLING HALF, nominal_thread_size: 1.312 INCHES ALL ENDS 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 4730-00-051-4679, 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
5400-S2-16
NSN: 4730-00-051-4679
FSC: 4730
CAGE: 00624 — EATON AEROQUIP LLC DBA JACKSON NORTH 1 DIV FLUID AND ELECTRICAL DISTRIBUTION (USA)
SPECIFICATIONS
materialCOPPER ALLOY BODY
thread_class2B ALL ENDS
connection_typeTHREADED INTERNAL BOSS FIRST FLUID END CONNECTION
connection_styleBOSS GASKET SEAL ALL ENDS
style_designatorMALE COUPLING HALF
nominal_thread_size1.312 INCHES ALL ENDS IN
thread_quantity_per_inch12 ALL ENDS
thread_series_designatorUN ALL ENDS
NSN4730-00-051-4679
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 5400-S2-16 · 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
•
SPECIAL TEST FEATURES: TESTED IN ACCORDANCE W/MIL-Q-9858
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: AS DIFFERENTIATED BY SPECIAL TEST FEATURES
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL TEST FEATURESTESTED IN ACCORDANCE W/MIL-Q-9858
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSAS DIFFERENTIATED BY SPECIAL TEST FEATURES
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
91595124Interchangeable
interchangeable cross-reference
interchangeable
201155Interchangeable
interchangeable cross-reference
interchangeable
5400-S2-16Interchangeable
interchangeable cross-reference
interchangeable
845-2445071ITEM11Interchangeable
interchangeable cross-reference
interchangeable
6050-223PC158Interchangeable
Same NIIN cross-reference
interchangeable
27341-2-16SInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5400-S2-16?
5400-S2-16 is a COUPLING HALF,SELF-SEALING.
What parts can replace 5400-S2-16?
There are 10 known substitutes for 5400-S2-16: 91595124, 201155, 5400-S2-16 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 5400-S2-16?
5400-S2-16 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-051-4679. 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