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ZY400-3 — TEE,TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

ZY400-3: TEE,TUBE.

The TEE,TUBE is a the manufacturer industrial component. Key specifications include material: PLASTIC OVERALL, leg_length: 1.031 INCHES NOMINAL ALL ENDS IN, seat_angle: 20.0 DEGREES ALL ENDS, thread_class: 2A ALL ENDS A, connection_type: THREADED EXTERNAL TUBE ALL ENDS, connection_style: FLARELESS (TUBE) ALL ENDS. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-931-8312, 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
ZY400-3
NSN: 4730-00-931-8312
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 3T9T9 — SWAGELOK CO (USA)
SPECIFICATIONS
materialPLASTIC OVERALL
leg_length1.031 INCHES NOMINAL ALL ENDS IN
seat_angle20.0 DEGREES ALL ENDS
thread_class2A ALL ENDS A
connection_typeTHREADED EXTERNAL TUBE ALL ENDS
connection_styleFLARELESS (TUBE) ALL ENDS
operating_pressure1700.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size0.437 INCHES ALL ENDS IN
maximum_operating_temp200.0 FAHRENHEIT SINGLE RESPONSE DEGF
thread_series_designatorUNF ALL ENDS
furnished_items_and_quantity6 FERRULE SLEEVE AND 3 TUBE COUPLING NUT
nominal_outside_diameter_tube_accommodated0.250 INCHES ALL ENDS IN
NSN4730-00-931-8312
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: ZY400-3 · 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
•
FURNISHED ITEMS AND QUANTITY: 6 FERRULE SLEEVE AND 3 TUBE COUPLING NUT
•
CONNECTION STYLE: FLARELESS (TUBE) ALL ENDS
•
CONNECTION TYPE: THREADED EXTERNAL TUBE ALL ENDS
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.250 INCHES ALL ENDS IN
•
OPERATING PRESSURE: 1700.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
LEG LENGTH: 1.031 INCHES NOMINAL ALL ENDS IN
•
NOMINAL THREAD SIZE: 0.437 INCHES ALL ENDS IN
•
SEAT ANGLE: 20.0 DEGREES ALL ENDS
TECHNICAL CHARACTERISTICS
FURNISHED ITEMS AND QUANTITY6 FERRULE SLEEVE AND 3 TUBE COUPLING NUT
CONNECTION STYLEFLARELESS (TUBE) ALL ENDS
CONNECTION TYPETHREADED EXTERNAL TUBE ALL ENDS
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES ALL ENDS IN
OPERATING PRESSURE1700.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
LEG LENGTH1.031 INCHES NOMINAL ALL ENDS IN
NOMINAL THREAD SIZE0.437 INCHES ALL ENDS IN
SEAT ANGLE20.0 DEGREES ALL ENDS
MAXIMUM OPERATING TEMP200.0 FAHRENHEIT SINGLE RESPONSE DEGF
THREAD CLASS2A ALL ENDS A
SUBSTITUTES & CROSS-REFERENCES 9
NY-400-3Reference document
Same NSN cross-reference
Reference document — Secondary reference
NY4-3TTT4Reference document
Same NSN cross-reference
Reference document — Secondary reference
4-4-4JBZ-NYReference document
Same NSN cross-reference
Reference document — Secondary reference
GT515B4Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
50-012-15N400Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
S1137-1Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is ZY400-3?
ZY400-3 is a TEE,TUBE.
What parts can replace ZY400-3?
There are 9 known substitutes for ZY400-3: NY-400-3, NY4-3TTT4, 4-4-4JBZ-NY and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for ZY400-3?
ZY400-3 is cataloged in the U.S. Government catalog under NSN 4730-00-931-8312. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.