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AP321T04 — ELBOW,TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

AP321T04: ELBOW,TUBE.

The ELBOW,TUBE is a the manufacturer industrial component. Key specifications include material: TITANIUM ALLOY UNS R54520 OVERALL, flow_angle: 45.0 DEGREES, leg_length: 1.031 INCHES MINIMUM AND 1.061 INCHES MAXIMUM FIRST END IN, thread_class: 3A ALL ENDS A, connection_style: CUSHION SEAL (TUBE) ALL ENDS, nominal_thread_size: 0.438 INCHES ALL ENDS IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-004-1170, 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
AP321T04
NSN: 4730-00-004-1170
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 01673 — SPS TECHNOLOGIES, LLC DBA AIRDROME PRECISION COMPONENTS (USA)
SPECIFICATIONS
materialTITANIUM ALLOY UNS R54520 OVERALL
flow_angle45.0 DEGREES
leg_length1.031 INCHES MINIMUM AND 1.061 INCHES MAXIMUM FIRST END IN
thread_class3A ALL ENDS A
connection_styleCUSHION SEAL (TUBE) ALL ENDS
nominal_thread_size0.438 INCHES ALL ENDS IN
maximum_operating_temp135.0 FAHRENHEIT SINGLE RESPONSE DEGF
end_item_identificationAIRCRAFT; F-14, F-16, AND F-18
media_for_which_designedHYDRAULIC FLUID SINGLE RESPONSE
thread_quantity_per_inch24 ALL ENDS
thread_series_designatorUNJS ALL ENDS
material_document_and_classificationAMS 4965,6AL-4V ASSN STD SINGLE MATERIAL RESPONSE OVERALL V
NSN4730-00-004-1170
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: AP321T04 · 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
•
FLOW ANGLE: 45.0 DEGREES
•
CONNECTION STYLE: CUSHION SEAL (TUBE) ALL ENDS
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 4965,6AL-4V ASSN STD SINGLE MATERIAL RESPONSE OVERALL V
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.250 INCHES ALL ENDS IN
•
LEG LENGTH: 0.405 INCHES MINIMUM AND 0.435 INCHES MAXIMUM SECOND END IN
•
NOMINAL THREAD SIZE: 0.438 INCHES FIRST END BULKHEAD IN
TECHNICAL CHARACTERISTICS
FLOW ANGLE45.0 DEGREES
CONNECTION STYLECUSHION SEAL (TUBE) ALL ENDS
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 4965,6AL-4V ASSN STD SINGLE MATERIAL RESPONSE OVERALL V
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES ALL ENDS IN
LEG LENGTH0.405 INCHES MINIMUM AND 0.435 INCHES MAXIMUM SECOND END IN
LEG LENGTH1.031 INCHES MINIMUM AND 1.061 INCHES MAXIMUM FIRST END IN
NOMINAL THREAD SIZE0.438 INCHES FIRST END BULKHEAD IN
NOMINAL THREAD SIZE0.438 INCHES ALL ENDS IN
MAXIMUM OPERATING TEMP135.0 FAHRENHEIT SINGLE RESPONSE DEGF
MEDIA FOR WHICH DESIGNEDHYDRAULIC FLUID SINGLE RESPONSE
SUBSTITUTES & CROSS-REFERENCES 8
ST7M211Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
R44359T-04Reference document
Same NSN cross-reference
Reference document — Secondary reference
C7560-4Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
TF321T04Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
GE510BNReference document
Same NSN cross-reference
Reference document — Drawing number reference only
AE16339-4Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AP321T04?
AP321T04 is a ELBOW,TUBE.
What parts can replace AP321T04?
There are 8 known substitutes for AP321T04: ST7M211, R44359T-04, C7560-4 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AP321T04?
AP321T04 is cataloged in the U.S. Government catalog under NSN 4730-00-004-1170. This indicates validated use in U.S. government and defense supply chains.
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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.