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AP6686T04-021 — COUPLING,TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

AP6686T04-021: COUPLING,TUBE.

The COUPLING,TUBE is a the manufacturer industrial component. Key specifications include material: TITANIUM ALLOY OVERALL, seat_angle: 8.1 DEGREES FIRST END, thread_class: 3B FIRST END, connection_type: UNTHREADED INTERNAL TUBE SECOND END, connection_style: SOCKET (TUBE) SECOND END, special_features: FEMALE BEAM SEALTO SOCKET WELD. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-547-3955, 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
AP6686T04-021
NSN: 4730-01-547-3955
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 01673 — SPS TECHNOLOGIES, LLC DBA AIRDROME PRECISION COMPONENTS (USA)
SPECIFICATIONS
materialTITANIUM ALLOY OVERALL
seat_angle8.1 DEGREES FIRST END
thread_class3B FIRST END
connection_typeUNTHREADED INTERNAL TUBE SECOND END
connection_styleSOCKET (TUBE) SECOND END
special_featuresFEMALE BEAM SEALTO SOCKET WELD
style_designatorGROOVED AND THREADED INTERNAL
operating_pressure5000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size0.438 INCHES FIRST END IN
nominal_overall_length0.649 INCHES IN
end_item_identificationMISC BULK ITEMS
thread_quantity_per_inch24 FIRST END
NSN4730-01-547-3955
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: AP6686T04-021 · 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
•
CONNECTION STYLE: SOCKET (TUBE) SECOND END
•
TUBING WALL NOMINAL THICKNESS FOR WHICH DESIGNED: 0.022 INCHES SECOND END IN
•
NOMINAL OVERALL LENGTH: 0.649 INCHES IN
•
CONNECTION TYPE: UNTHREADED INTERNAL TUBE SECOND END
•
STYLE DESIGNATOR: GROOVED AND THREADED INTERNAL
•
MATERIAL DOCUMENT AND CLASSIFICATION: 81343-AMS4965 6AL-4V FED SPEC ALL MATERIAL RESPONSES OVERALL V
TECHNICAL CHARACTERISTICS
CONNECTION STYLESOCKET (TUBE) SECOND END
CONNECTION STYLESWIVEL NUT INVERTED FLARE (TUBE) FIRST END
TUBING WALL NOMINAL THICKNESS FOR WHICH DESIGNED0.022 INCHES SECOND END IN
NOMINAL OVERALL LENGTH0.649 INCHES IN
CONNECTION TYPEUNTHREADED INTERNAL TUBE SECOND END
CONNECTION TYPETHREADED INTERNAL TUBE FIRST END
STYLE DESIGNATORGROOVED AND THREADED INTERNAL
MATERIAL DOCUMENT AND CLASSIFICATION81343-AMS4965 6AL-4V FED SPEC ALL MATERIAL RESPONSES OVERALL V
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES ALL ENDS IN
OPERATING PRESSURE5000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
SUBSTITUTES & CROSS-REFERENCES 4
AP6686T-04Reference document
Same NSN cross-reference
Reference document — Secondary reference
AFP2049T-04Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
50-096-04Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
R42540TReference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AP6686T04-021?
AP6686T04-021 is a COUPLING,TUBE.
What parts can replace AP6686T04-021?
There are 4 known substitutes for AP6686T04-021: AP6686T-04, AFP2049T-04, 50-096-04 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AP6686T04-021?
AP6686T04-021 is cataloged in the U.S. Government catalog under NSN 4730-01-547-3955. This indicates validated use in U.S. government and defense supply chains.
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