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AQ86-DOT-4X4 — UNION,TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

AQ86-DOT-4X4: UNION,TUBE.

The UNION,TUBE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, connection_type: UNTHREADED INTERNAL TUBE ALL ENDS, connection_style: GASKET SEAL (TUBE) ALL ENDS, style_designator: FLARELESS W/ BULKHEAD THREADS, nominal_thread_size: 0.5 INCHES CENTER BULKHEAD IN, maximum_operating_temp: 212.0 FAHRENHEIT SINGLE RESPONSE DEGF. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-654-7040, 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
AQ86-DOT-4X4
NSN: 4730-01-654-7040
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 1TNF3 — ALKON CORPORATION (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
connection_typeUNTHREADED INTERNAL TUBE ALL ENDS
connection_styleGASKET SEAL (TUBE) ALL ENDS
style_designatorFLARELESS W/ BULKHEAD THREADS
nominal_thread_size0.5 INCHES CENTER BULKHEAD IN
maximum_operating_temp212.0 FAHRENHEIT SINGLE RESPONSE DEGF
nominal_overall_length1.56 INCHES IN
media_for_which_designedAIR SINGLE RESPONSE
thread_quantity_per_inch20 CENTER BULKHEAD
nominal_width_across_flats0.6875 INCHES CENTER BULKHEAD IN
nominal_outside_diameter_tube_accommodated0.25 INCHES ALL ENDS IN
NSN4730-01-654-7040
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: AQ86-DOT-4X4 · 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
•
NOMINAL WIDTH ACROSS FLATS: 0.6875 INCHES CENTER BULKHEAD IN
•
CONNECTION STYLE: GASKET SEAL (TUBE) ALL ENDS
•
NOMINAL OVERALL LENGTH: 1.56 INCHES IN
•
CONNECTION TYPE: UNTHREADED INTERNAL TUBE ALL ENDS
•
STYLE DESIGNATOR: FLARELESS W/ BULKHEAD THREADS
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.25 INCHES ALL ENDS IN
•
NOMINAL THREAD SIZE: 0.5 INCHES CENTER BULKHEAD IN
•
MAXIMUM OPERATING TEMP: 212.0 FAHRENHEIT SINGLE RESPONSE DEGF
TECHNICAL CHARACTERISTICS
NOMINAL WIDTH ACROSS FLATS0.6875 INCHES CENTER BULKHEAD IN
CONNECTION STYLEGASKET SEAL (TUBE) ALL ENDS
NOMINAL OVERALL LENGTH1.56 INCHES IN
CONNECTION TYPEUNTHREADED INTERNAL TUBE ALL ENDS
STYLE DESIGNATORFLARELESS W/ BULKHEAD THREADS
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.25 INCHES ALL ENDS IN
NOMINAL THREAD SIZE0.5 INCHES CENTER BULKHEAD IN
MAXIMUM OPERATING TEMP212.0 FAHRENHEIT SINGLE RESPONSE DEGF
MEDIA FOR WHICH DESIGNEDAIR SINGLE RESPONSE
THREAD QUANTITY PER INCH20 CENTER BULKHEAD
SUBSTITUTES & CROSS-REFERENCES 2
SAE J2494-1 4-4 630603BReference document
Same NSN cross-reference
Reference document — Design control — primary reference
122058Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AQ86-DOT-4X4?
AQ86-DOT-4X4 is a UNION,TUBE.
What parts can replace AQ86-DOT-4X4?
There are 2 known substitutes for AQ86-DOT-4X4: SAE J2494-1 4-4 630603B, 122058. Substitute compatibility should be verified for your specific system.
What is the NSN for AQ86-DOT-4X4?
AQ86-DOT-4X4 is cataloged in the U.S. Government catalog under NSN 4730-01-654-7040. 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.